Discover A First Look at Numerical Functional Analysis (Dover Books on Mathematics) by W.W. Sawyer.
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Overview: Functional analysis arose from traditional topics of calculus and integral and differential equations. This accessible text by an internationally renowned teacher and author starts with problems in numerical analysis and shows how they lead naturally to the concepts of functional analysis.Suitable for advanced undergraduates and graduate students, this book provides coherent explanations for complex concepts. Topics include Banach and Hilbert spaces, contraction mappings and other criteria for convergence, differentiation and integration in Banach spaces, the Kantorovich test for convergence of an iteration, and Rall's ideas of polynomial and quadratic operators. Numerous examples appear throughout the text.
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Details & Genres
Mathà Terminer Plus TardShould ReadBasic PhysicsBasic MathAcadémiqueNonf
W.W. Sawyer is a writer and avid reader based in the Pacific Northwest. Before pursuing writing full-time, they spent over a decade working in education. When not working on their next book, W.W. Sawyer can usually be found hiking with their dog or trying out new coffee shops in their neighborhood.
Honestly one of the better books I've read lately. I loved how the story unfolded. It kept me guessing without being too confusing. A solid 5/5 for me.
Gary SanchezAugust 05, 2025
Took me a few chapters to get into it, but it was worth it. The middle dragged a tiny bit, but the ending totally made up for it. Still a good book.
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Patricia RodriguezAugust 18, 2024
Really enjoyed this one. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Will be looking for more from this author.
Ryan GreenOctober 09, 2025
Finished it in a couple of days. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. A solid 5/5 for me.
William BakerJuly 28, 2024
Pretty good overall. It held my attention, even if a few things were a little predictable. Enjoyable weekend read.
Michelle HallDecember 05, 2025
I was pleasantly surprised. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Would probably read it again at some point.
Karen LopezJuly 27, 2025
Took me a few chapters to get into it, but it was worth it. It held my attention, even if a few things were a little predictable. Not bad at all.
Lisa NguyenNovember 30, 2024
Such a great read. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Would probably read it again at some point.
Charles RiveraNovember 03, 2024
Such a great read. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Will be looking for more from this author.
Kevin ReyesSeptember 08, 2025
Pretty good overall. It held my attention, even if a few things were a little predictable. A solid 4 stars from me.
Deborah TorresMay 01, 2024
Glad someone recommended this to me. The writing style is very engaging. It’s easy to follow but still has a lot of depth. A solid 5/5 for me.
Robert GonzalezApril 17, 2025
Finished it in a couple of days. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Glad I picked this up.
Sarah TaylorJune 03, 2025
Such a great read. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Will be looking for more from this author.
Linda SanchezApril 04, 2025
Finished it in a couple of days. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Glad I picked this up.
Margaret TorresDecember 10, 2025
Took me a few chapters to get into it, but it was worth it. It held my attention, even if a few things were a little predictable. A solid 4 stars from me.
Mark HallJanuary 27, 2024
Good, but not quite perfect. Writing is good, just wish there was a bit more depth in certain parts. Still kept my attention though. Not bad at all.
Nancy CampbellFebruary 11, 2024
Took me a few chapters to get into it, but it was worth it. It held my attention, even if a few things were a little predictable. Not bad at all.
Brian WalkerJanuary 23, 2024
Pretty good overall. I liked the main character, though some of the side plots were just okay. Not bad at all.
Emily CollinsSeptember 17, 2025
Good, but not quite perfect. It held my attention, even if a few things were a little predictable. I'd probably recommend it to a friend.
Rebecca WilliamsDecember 29, 2024
Took me a few chapters to get into it, but it was worth it. Interesting premise and executed fairly well. Just a few slow chapters here and there. Enjoyable weekend read.
Charles RiveraJanuary 29, 2025
Honestly one of the better books I've read lately. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Would probably read it again at some point.
Paul MillerApril 29, 2025
Pretty good overall. Writing is good, just wish there was a bit more depth in certain parts. Still kept my attention though. Enjoyable weekend read.
Donna AndersonAugust 24, 2025
Finished it in a couple of days. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Worth the time and money.
Richard ParkerOctober 18, 2024
Good, but not quite perfect. I liked the main character, though some of the side plots were just okay. Not bad at all.
Donald HillDecember 28, 2025
Not bad, but not my favorite. It felt a bit repetitive in the middle. Could have been shorter. A generous 3 stars.
Christopher WhiteFebruary 02, 2024
Finished it in a couple of days. I loved how the story unfolded. It kept me guessing without being too confusing. Glad I picked this up.
Brian LeeJuly 13, 2024
Really enjoyed this one. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. A solid 5/5 for me.
Laura HarrisAugust 01, 2024
A solid read. I liked the main character, though some of the side plots were just okay. Enjoyable weekend read.
Andrew KingSeptember 27, 2024
Honestly one of the better books I've read lately. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Worth the time and money.
Robert RiveraFebruary 25, 2024
A very satisfying read. I loved how the story unfolded. It kept me guessing without being too confusing. A solid 5/5 for me.
Cynthia EvansJanuary 02, 2025
Glad someone recommended this to me. I got really invested in the main character's journey. Everything just clicked for me. Definitely recommend it if you like this genre.
Andrew ReyesJanuary 12, 2025
A solid read. Interesting premise and executed fairly well. Just a few slow chapters here and there. A solid 4 stars from me.
Betty SmithMay 02, 2025
Glad someone recommended this to me. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Will be looking for more from this author.
Daniel CampbellSeptember 09, 2025
Pretty good overall. I liked the main character, though some of the side plots were just okay. I'd probably recommend it to a friend.
Sarah GreenMay 11, 2025
A very satisfying read. I loved how the story unfolded. It kept me guessing without being too confusing. Definitely recommend it if you like this genre.
Donald TurnerAugust 20, 2025
Pretty good overall. It held my attention, even if a few things were a little predictable. I'd probably recommend it to a friend.
Kevin BrownMarch 23, 2025
A solid read. The middle dragged a tiny bit, but the ending totally made up for it. Still a good book.
Brian AllenAugust 29, 2024
Glad someone recommended this to me. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Definitely recommend it if you like this genre.
Deborah PerezAugust 28, 2025
A very satisfying read. I got really invested in the main character's journey. Everything just clicked for me. Worth the time and money.
William HernandezNovember 23, 2025
I was pleasantly surprised. The author did a great job wrapping everything up at the end. No weird plot holes left behind. A solid 5/5 for me.
Deborah EdwardsDecember 16, 2024
A very satisfying read. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Glad I picked this up.
Edward EdwardsSeptember 16, 2024
Pretty good overall. Writing is good, just wish there was a bit more depth in certain parts. Still kept my attention though. I'd probably recommend it to a friend.
Betty NguyenNovember 16, 2024
Such a great read. I loved how the story unfolded. It kept me guessing without being too confusing. Definitely recommend it if you like this genre.
Karen RobinsonSeptember 04, 2024
I was pleasantly surprised. I loved how the story unfolded. It kept me guessing without being too confusing. Definitely recommend it if you like this genre.
Michael LopezMay 21, 2025
Such a great read. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. A solid 5/5 for me.
Amanda JonesJuly 05, 2024
Really enjoyed this one. I got really invested in the main character's journey. Everything just clicked for me. Will be looking for more from this author.
Michael SmithDecember 21, 2025
Finished it in a couple of days. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Worth the time and money.
George BakerFebruary 06, 2025
Pretty good overall. The middle dragged a tiny bit, but the ending totally made up for it. Still a good book.
Eric HernandezNovember 01, 2024
It was okay. The pacing was a bit slow and I found myself skimming a few pages. It wasn't terrible, just okay. Might work better for someone else, just wasn't completely for me.
William JohnsonMay 31, 2024
A solid read. It held my attention, even if a few things were a little predictable. Still a good book.
Deborah WalkerJune 23, 2025
Such a great read. I got really invested in the main character's journey. Everything just clicked for me. Glad I picked this up.
Emily HarrisMarch 31, 2024
A very satisfying read. The author did a great job wrapping everything up at the end. No weird plot holes left behind. A solid 5/5 for me.
Charles MitchellAugust 02, 2025
Such a great read. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Worth the time and money.
Betty JohnsonSeptember 14, 2025
Honestly one of the better books I've read lately. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Would probably read it again at some point.
Joshua EvansMay 21, 2025
Such a great read. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Would probably read it again at some point.
Laura HernandezDecember 23, 2024
A solid read. The middle dragged a tiny bit, but the ending totally made up for it. I'd probably recommend it to a friend.
Christopher AndersonAugust 16, 2024
A very satisfying read. The writing style is very engaging. It’s easy to follow but still has a lot of depth. A solid 5/5 for me.
Ryan GreenMarch 06, 2024
Such a great read. I got really invested in the main character's journey. Everything just clicked for me. Would probably read it again at some point.
Nancy WalkerMarch 07, 2025
An average read for me. Some parts were interesting, while others were a bit of a slog to get through. A generous 3 stars.
Edward EdwardsDecember 06, 2024
Glad someone recommended this to me. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Glad I picked this up.
Jessica BakerApril 19, 2024
Not bad, but not my favorite. It had some good moments, but the overall plot felt a bit disjointed in the second half. Probably won't read it again, but it was an okay way to pass the time.
Stephanie EdwardsNovember 15, 2024
Took me a few chapters to get into it, but it was worth it. Interesting premise and executed fairly well. Just a few slow chapters here and there. Still a good book.
Betty JohnsonDecember 28, 2024
Not bad, but not my favorite. The pacing was a bit slow and I found myself skimming a few pages. It wasn't terrible, just okay. It's fine if you have nothing else to read.
Mary WilliamsSeptember 14, 2025
Good, but not quite perfect. It held my attention, even if a few things were a little predictable. Enjoyable weekend read.
Melissa ThomasSeptember 23, 2025
I liked it for the most part. I liked the main character, though some of the side plots were just okay. Not bad at all.
Linda RobinsonNovember 27, 2024
Finished it in a couple of days. I loved how the story unfolded. It kept me guessing without being too confusing. A solid 5/5 for me.
John TorresJune 15, 2024
Good, but not quite perfect. It held my attention, even if a few things were a little predictable. A solid 4 stars from me.
Betty SmithMay 22, 2025
I liked it for the most part. The middle dragged a tiny bit, but the ending totally made up for it. Not bad at all.
Mark AndersonJune 01, 2025
A solid read. It held my attention, even if a few things were a little predictable. I'd probably recommend it to a friend.
Gary AndersonMay 01, 2025
Really enjoyed this one. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Glad I picked this up.
Linda ThomasFebruary 20, 2024
Pretty good overall. The middle dragged a tiny bit, but the ending totally made up for it. Still a good book.
Steven ThompsonJune 02, 2025
Finished it in a couple of days. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Would probably read it again at some point.
Anthony WalkerAugust 03, 2024
Really enjoyed this one. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Will be looking for more from this author.
David MooreJanuary 30, 2025
Honestly one of the better books I've read lately. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Definitely recommend it if you like this genre.
Joshua HallAugust 07, 2024
Really enjoyed this one. I got really invested in the main character's journey. Everything just clicked for me. A solid 5/5 for me.
Jacob WalkerMarch 09, 2024
Finished it in a couple of days. I got really invested in the main character's journey. Everything just clicked for me. Would probably read it again at some point.
William NguyenJuly 13, 2024
Good, but not quite perfect. I liked the main character, though some of the side plots were just okay. Not bad at all.
Robert JonesJuly 10, 2024
Glad someone recommended this to me. I got really invested in the main character's journey. Everything just clicked for me. A solid 5/5 for me.
Linda EdwardsJanuary 13, 2024
Took me a few chapters to get into it, but it was worth it. I liked the main character, though some of the side plots were just okay. Still a good book.
Jessica BakerApril 01, 2024
Finished it in a couple of days. I got really invested in the main character's journey. Everything just clicked for me. Definitely recommend it if you like this genre.
James NguyenSeptember 03, 2025
A solid read. It held my attention, even if a few things were a little predictable. Not bad at all.
William HarrisFebruary 28, 2025
Really enjoyed this one. I got really invested in the main character's journey. Everything just clicked for me. A solid 5/5 for me.
Margaret YoungJune 30, 2024
A very satisfying read. I got really invested in the main character's journey. Everything just clicked for me. Will be looking for more from this author.
Matthew HillOctober 07, 2024
A very satisfying read. I loved how the story unfolded. It kept me guessing without being too confusing. Would probably read it again at some point.
Susan LopezDecember 27, 2024
Good, but not quite perfect. Interesting premise and executed fairly well. Just a few slow chapters here and there. I'd probably recommend it to a friend.
Thomas GonzalezApril 21, 2025
A very satisfying read. The author did a great job wrapping everything up at the end. No weird plot holes left behind. A solid 5/5 for me.
William NguyenDecember 23, 2025
Glad someone recommended this to me. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Worth the time and money.
Daniel DavisMarch 27, 2025
Good, but not quite perfect. I liked the main character, though some of the side plots were just okay. I'd probably recommend it to a friend.
Michael LopezFebruary 20, 2024
Such a great read. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Definitely recommend it if you like this genre.
Patricia RodriguezFebruary 23, 2024
It was just alright. The pacing was a bit slow and I found myself skimming a few pages. It wasn't terrible, just okay. A generous 3 stars.
Laura PerezOctober 03, 2025
Honestly one of the better books I've read lately. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Would probably read it again at some point.
Barbara AndersonMarch 03, 2025
A very satisfying read. I got really invested in the main character's journey. Everything just clicked for me. A solid 5/5 for me.
Gary MitchellAugust 25, 2025
Really enjoyed this one. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Glad I picked this up.
Joseph NelsonAugust 19, 2025
Glad someone recommended this to me. The author did a great job wrapping everything up at the end. No weird plot holes left behind. A solid 5/5 for me.
Mary MooreSeptember 30, 2025
Glad someone recommended this to me. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Definitely recommend it if you like this genre.
Joshua TaylorJune 18, 2024
I was pleasantly surprised. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Worth the time and money.
Christopher ThompsonJune 06, 2024
Pretty good overall. Writing is good, just wish there was a bit more depth in certain parts. Still kept my attention though. Not bad at all.
Jessica FloresFebruary 06, 2025
I liked it for the most part. I liked the main character, though some of the side plots were just okay. Still a good book.
Carol TaylorSeptember 24, 2025
Really enjoyed this one. The writing style is very engaging. It’s easy to follow but still has a lot of depth. A solid 5/5 for me.
Carol TaylorOctober 02, 2024
I liked it for the most part. I liked the main character, though some of the side plots were just okay. A solid 4 stars from me.
Anthony TurnerMarch 23, 2024
Such a great read. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Glad I picked this up.
Stephanie PerezMarch 04, 2025
I was pleasantly surprised. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Definitely recommend it if you like this genre.
John FloresSeptember 06, 2025
Really enjoyed this one. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Will be looking for more from this author.
Donald HillMay 16, 2024
Good, but not quite perfect. The middle dragged a tiny bit, but the ending totally made up for it. Enjoyable weekend read.
Melissa ScottJune 26, 2024
A very satisfying read. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Will be looking for more from this author.
Steven RobertsJanuary 19, 2024
An average read for me. It felt a bit repetitive in the middle. Could have been shorter. A generous 3 stars.
Linda EdwardsJune 29, 2024
A solid read. Writing is good, just wish there was a bit more depth in certain parts. Still kept my attention though. I'd probably recommend it to a friend.
Melissa AdamsJanuary 06, 2024
Finished it in a couple of days. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Glad I picked this up.
Linda CarterSeptember 10, 2024
Took me a few chapters to get into it, but it was worth it. I liked the main character, though some of the side plots were just okay. A solid 4 stars from me.
Thomas JonesApril 23, 2025
I have mixed feelings about this one. Some parts were interesting, while others were a bit of a slog to get through. Might work better for someone else, just wasn't completely for me.
Elizabeth CruzAugust 30, 2025
I was pleasantly surprised. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Glad I picked this up.
Charles CarterDecember 20, 2025
A solid read. It held my attention, even if a few things were a little predictable. Not bad at all.
Edward PhillipsMarch 05, 2024
I liked it for the most part. Interesting premise and executed fairly well. Just a few slow chapters here and there. A solid 4 stars from me.
Jessica FloresDecember 19, 2025
It was just alright. It felt a bit repetitive in the middle. Could have been shorter. Just right down the middle.
Rebecca WilliamsSeptember 26, 2025
Good, but not quite perfect. I liked the main character, though some of the side plots were just okay. Still a good book.
Paul MartinezJanuary 29, 2025
I was pleasantly surprised. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. A solid 5/5 for me.
Andrew KingNovember 15, 2024
Such a great read. I got really invested in the main character's journey. Everything just clicked for me. Worth the time and money.
Jennifer DavisMay 28, 2024
A solid read. Interesting premise and executed fairly well. Just a few slow chapters here and there. I'd probably recommend it to a friend.
Laura TorresMay 15, 2025
Really enjoyed this one. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Glad I picked this up.
Sandra CampbellJuly 23, 2024
Took me a few chapters to get into it, but it was worth it. It held my attention, even if a few things were a little predictable. I'd probably recommend it to a friend.
Patricia PhillipsSeptember 30, 2025
Glad someone recommended this to me. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Definitely recommend it if you like this genre.
Michael SmithDecember 17, 2025
Good, but not quite perfect. Writing is good, just wish there was a bit more depth in certain parts. Still kept my attention though. Enjoyable weekend read.
Brian JacksonMay 19, 2024
It was okay. It felt a bit repetitive in the middle. Could have been shorter. Probably won't read it again, but it was an okay way to pass the time.
Michael RobinsonOctober 03, 2025
A solid read. I liked the main character, though some of the side plots were just okay. I'd probably recommend it to a friend.
Margaret TaylorAugust 25, 2025
Pretty good overall. Interesting premise and executed fairly well. Just a few slow chapters here and there. Still a good book.
Patricia MillerFebruary 01, 2024
An average read for me. It had some good moments, but the overall plot felt a bit disjointed in the second half. It's fine if you have nothing else to read.
Charles MitchellJuly 31, 2024
Such a great read. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Will be looking for more from this author.
Sarah TorresFebruary 05, 2024
I liked it for the most part. I liked the main character, though some of the side plots were just okay. Still a good book.
Patricia WilsonJune 22, 2024
Took me a few chapters to get into it, but it was worth it. Writing is good, just wish there was a bit more depth in certain parts. Still kept my attention though. Enjoyable weekend read.
Eric HernandezSeptember 25, 2024
A solid read. Interesting premise and executed fairly well. Just a few slow chapters here and there. Not bad at all.
Christopher GarciaNovember 05, 2024
Good, but not quite perfect. I liked the main character, though some of the side plots were just okay. I'd probably recommend it to a friend.
James HarrisJanuary 04, 2024
Honestly one of the better books I've read lately. I loved how the story unfolded. It kept me guessing without being too confusing. Glad I picked this up.
Kenneth RodriguezFebruary 23, 2024
A solid read. It held my attention, even if a few things were a little predictable. Enjoyable weekend read.
Joseph PhillipsOctober 23, 2024
Took me a few chapters to get into it, but it was worth it. I liked the main character, though some of the side plots were just okay. Still a good book.
Karen SmithNovember 19, 2025
I liked it for the most part. It held my attention, even if a few things were a little predictable. A solid 4 stars from me.
Sharon RodriguezJuly 26, 2025
Such a great read. I got really invested in the main character's journey. Everything just clicked for me. Worth the time and money.
Edward TaylorApril 22, 2024
Pretty good overall. I liked the main character, though some of the side plots were just okay. A solid 4 stars from me.
Elizabeth BrownMay 16, 2025
Really enjoyed this one. I got really invested in the main character's journey. Everything just clicked for me. Worth the time and money.
Elizabeth CruzMay 16, 2024
I liked it for the most part. The middle dragged a tiny bit, but the ending totally made up for it. Not bad at all.
David HallMay 07, 2024
Finished it in a couple of days. I loved how the story unfolded. It kept me guessing without being too confusing. A solid 5/5 for me.
Stephanie MillerJanuary 30, 2025
A very satisfying read. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Glad I picked this up.
Cynthia MillerOctober 08, 2025
I have mixed feelings about this one. It felt a bit repetitive in the middle. Could have been shorter. Just right down the middle.
Deborah ScottMay 30, 2024
Good, but not quite perfect. Interesting premise and executed fairly well. Just a few slow chapters here and there. A solid 4 stars from me.
Melissa CollinsNovember 21, 2025
A solid read. The middle dragged a tiny bit, but the ending totally made up for it. Not bad at all.
Eric MartinOctober 02, 2025
I was pleasantly surprised. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Worth the time and money.
Betty ReyesDecember 23, 2024
A very satisfying read. I loved how the story unfolded. It kept me guessing without being too confusing. Will be looking for more from this author.
Dorothy HernandezJanuary 14, 2025
I was pleasantly surprised. I got really invested in the main character's journey. Everything just clicked for me. Definitely recommend it if you like this genre.
Kimberly ParkerAugust 22, 2024
Not bad, but not my favorite. The pacing was a bit slow and I found myself skimming a few pages. It wasn't terrible, just okay. It's fine if you have nothing else to read.
Robert GonzalezJuly 11, 2024
I liked it for the most part. Interesting premise and executed fairly well. Just a few slow chapters here and there. I'd probably recommend it to a friend.
James NelsonApril 25, 2025
Glad someone recommended this to me. I got really invested in the main character's journey. Everything just clicked for me. Glad I picked this up.