SolvedBooks vs Proof Workshop

SolvedBooks is a free study companion for university and graduate students working through classic mathematics textbooks. Every solution is written from scratch by a working mathematician — not scraped, paraphrased, or copied from any publisher's solutions manual. Each exercise gets a complete worked proof in clean LaTeX, plus a brief final-answer summary. Currently covered — 1,400+ exercises: • Serge Lang — Undergraduate Algebra, 3rd Edition • Sheldon Axler — Linear Algebra Done Right, 4th Edition • John M. Lee — Introduction to Smooth Manifolds, 2nd Edition (GTM 218) • John M. Lee — Riemannian Manifolds: An Introduction to Curvature (GTM 176) How it works Question groups (5 exercises each) are locked by default. Tap "Watch ad to unlock" once per group and the unlock is permanent on your device. There is no in-app purchase to remove ads — the ads pay to maintain the app and cover more textbooks over time. What you will not find here • The original textbook problem statements — they are intentionally not reproduced • Hints, figures, or solutions copied from any publisher's manual • Accounts or cross-device sync — v1 is local-only and works offline Pen before Peek Please attempt each exercise yourself first. Productive struggle is where the mathematics lives. SolvedBooks is for the moments where you genuinely need a worked solution to keep moving forward, not a shortcut around the thinking. About the developer Built by Chris Pun, a math graduate working in differential geometry. If you find an error in a solution, or want a particular textbook covered, please get in touch — every piece of feedback is read. Independent study aid. Not affiliated with or endorsed by Springer, Pearson, Addison-Wesley, or any other publisher. All textbook titles, author names, and chapter references are used solely for identification.

From reading proofs to building them. Proof Workshop covers core undergraduate math-major courses with concept cards, worked examples, practice problems and a proof builder. No account, no sign-up — your progress stays on your device. PROOF BUILDER (the core) - Stack shuffled proof steps in the right order - Each proof hides a plausible but wrong trap card built from a common misconception - Checking tells you how many steps are right and exactly where it first goes wrong - Stuck? A hint places just the next step AUTOMATIC REVIEW OF MISSED CONCEPTS - Concepts behind wrong answers collect in your review list - Re-read the concept card, then prove it with a different problem - Intervals grow 1, 3, 7 days as you get it right 8 SUBJECTS, 32 UNITS Calculus, Sets and Logic, Linear Algebra, Real Analysis, Abstract Algebra, Topology, Complex Analysis, Differential Equations - 96 concept cards, 160 practice problems with solutions, 32 proof builds - Math is typeset on-device and works offline - Numeric answers accept any equal form: 3/4 or 0.75 - All concepts, problems and proofs are original — no textbook or exam content copied FREE AND FULL ACCESS - The first unit of every subject is free, proof builder included - Full Access is a one-time purchase that opens units 2-4 of every subject. Not a subscription; it never auto-renews - Restore it on any device with the same Apple ID PRIVACY - No account, no ads, no analytics - Progress is stored only on your device and never transmitted Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://inphilchoi.github.io/mathmajor-privacy/ Contact: creativelab.choi@gmail.com