An Introduction To The Theory Of Numbers by G.H. HardyIntroduction to Metric and Topological Spaces by W.A. SutherlandFinite-Dimensional Vector Spaces by Paul R. HalmosContemporary Abstract Algebra by Joseph A. GallianAlgebra by Michael Artin
Mathematics Part A (University of Oxford)
12th out of 84 books — 11 voters

Introduction to Quantum Mechanics by David J. GriffithsThe Elements of Statistical Learning by Trevor HastieModern Quantum Mechanics by J.J. SakuraiOptions, Futures and Other Derivatives by John C. HullClassical Mechanics by Charles P. Poole Jr.
Mathematics Part II (University of Cambridge)
33rd out of 174 books — 12 voters
Introductory Functional Analysis with Applications by Erwin KreyszigPartial Differential Equations by Lawrence C. EvansInfinity and the Mind by Rudy RuckerTopics in Algebra by I.N. HersteinAlgebraic Topology by Allen Hatcher
Mathematics Part B (University of Oxford)
33rd out of 142 books — 7 voters

Concrete Mathematics by Ronald GrahamGeneratingfunctionology by Herbert S. WilfNetwork Science by Albert-László BarabásiThe Probabilistic Method by Noga AlonAnalytic Combinatorics by Philippe Flajolet
Combinatorics and Graph Theory (MMath)
13th out of 50 books — 7 voters
Calculus by Michael SpivakAlgebra by Paolo AluffiVisual Complex Analysis by Tristan NeedhamA Book of Abstract Algebra by Charles C. PinterPrinciples of Mathematical Analysis by Walter Rudin
Undergraduate Mathematics
472nd out of 571 books — 37 voters

Calculus by James StewartIntermediate Algebra by K. Elayn Martin-GayCalculus by Ron LarsonElementary Statistics by Mario F. TriolaPrecalculus by Michael   Sullivan
Open Syllabus Mathematics Books
97th out of 100 books — 1 voter
Database Management Systems by Gehrke RamakrishnanBeginning Database Design Solutions by Rod StephensSQL QuickStart Guide by Walter ShieldsDatabase Systems by Carlos M. CoronelDatabase Systems by Hector Garcia-Molina
Open Syllabus SQL Books
78th out of 89 books — 3 voters