| Harold's Cheat Sheets | ||
| Harold's Logic Cheat Sheet | Docx | The 7 basic logical symbols, laws, logical conditional, logical quantifiers (SNHU MAT 299 & SNHU MAT 230 Module 1) |
| Harold's Sets Cheat Sheet | Docx | Set notation, number sets, logic form of: set notation, numbers, geometry, and functions; Cartisian products, and set relations (SNHU MAT 299 & SNHU MAT 230 Module 1) |
| Harold's Counting Cheat Sheet | Docx | Counting methods, including sequences and sets (SNHU MAT 230 Module 3) |
| Harold's Probability Cheat Sheet | Docx | My compilation of common probability formulas (SNHU MAT243 & SNHU MAT 230 Modules 3 & 4) |
| Harold's Directed Graphs Cheat Sheet | Docx | Directed graphs (digraphs) (SNHU MAT 230 Module 5) |
| Harold's Undirected Graphs and Trees Cheat Sheet | Docx | Undirected graphs and trees (SNHU MAT 230 Module 6) |
| Harold's Modular Arithmetic Cheat Sheet | Docx | Modular arithmetic: b = a (mod m) (SNHU MAT260) |
| Harold's Prime Numbers Cheat Sheet | Docx | Prime numbers (SNHU MAT 260 & SNHU MAT 230 Module 8) |
| Harold's Cryptology Cheat Sheet | Docx | Cryptology, encode, decode, symmetric, asymentric, public-private key, hash functions (SNHU MAT 260 & SNHU MAT 230 Module 8) |
| Harold's Big O Cheat Sheet | Docx | Analysis of algorithms for asymptotic complexity measurement O(n). |
| Harold's Boolean Algebra Cheat Sheet | Docx | Boolean algebra, logic circuits, logic gates, truth tables |
| Harold's Flip-Flop Cheat Sheet | Docx | S-R, D, J-K, and T Flip-Flops |
| BarCharts QuickStudy Guide | ||
| Discrete Mathematics | ||
| Finite Math | ||
| Logic | ||
| Khan Academy | ||
| Cryptography | CS Theory Unit 2: 7 Subunits of practice problems | |
| Computer Science Theory | 3 Units of practice problems - Algorithms, Cryptography, Information Theory | |
| Statistics and Probability | 16 Units of practice problems | |
| Textbooks | ||
| Schaum's 2000 Solved Problems in Discrete Mathematics | Schaum's 2000 Solved Problems in Discrete Mathematics | |
| MAT 230: Discrete Mathematics, zyBooks | SNHU MAT 230 - Discrete Mathematics, ISBN: 978-1-3941-3430-4 | |
| Digital Fundamentals, Global 11th Edition, Thomas L Floyd | Electrical Engineering Digital Logic Text Book, Thomas L. Floyd, Global 11th Edition, 2015 | |
| Discrete Mathematics with Applications, 5th Edition, Susanna S. Epp | Discrete Mathematics with Applications, Susanna S. Epp, 5th Edition, 2019 | |
| Websites | ||
| Number Sets | Beautiful poster of the number sets. See the PDF at the bottom of the page. | |
| iPad Apps | Apple's App Store | |
| Math Ref | Best Math, Physics, and Chemistry Formulas |
Topics in discrete mathematics
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Last updated 2 January 2026