This page lists several basic mathematical concepts, data types, data structures, and algorithms with links to coresponding Wikipedia pages. Almost all of these topics are covered in CS 173 and CS 225, our undergraduate discrete mathematics and data structures classes. We assume that everyone taking CS 573 is already familiar witheverythingon this list, or at least has the intellectual maturity to learn it on the fly. (We recommend using an actual textbook to learn any of these concepts for the first time; the Wikipedia Cloud makes someverystrange choices.)## For a solid introduction to most of these topics, I strongly recommend Eric Lehman and Tom Leighton's extensive lecture notes for the Mathematics for Computer Science course at MIT.

Mathematics

- Elementary algebra
- Logarithm identities
- Naive set theory
- Binary relations, including functions, equivalence relations, and partial orders
- Modular arithmetic
- Elementary discrete probability: Uniform vs. nonuniform distributions, expectation, conditional probability
- Asymptotic notation (o, O, Θ, Ω, ω); comparing asymptotic growth rates
- Evaluating simple summations (at least asymptotically)
- Propositional logic (T, F, ¬, ∧, ∨, ⇒, ⇔) and first-order predicate logic (∀, ∃)
- Basic proof techniques: direct, indirect, exhaustive case analysis, contradiction
★ Induction ★(or equivalently, proof by minimal counterexample), especially strong induction and structural induction- Recurrences

- Solving divide-and-conquer recurrences via recursion trees (or at least the Master Theorem)
- Solving linear recurrences via annihilators (or characteristic polynomials, or generating functions, or...)
Jeff's notes on solving recurrences- Graphs (both undirected and directed), trees, directed acyclic graphs

Abstract data types

- scalars (booleans, characters, integers, reals, etc.)
- records
- pointers / references
- strings
- arrays / vectors (indexed sequences)
- stacks (LIFO lists)
- queues (FIFO lists)
- deques (double-ended queues)
- priority queues
- dictionaries
- graphs (directed and undirected)
## You may use any of these data structures in your homeworks and exams without providing further details or citing any source. If you use a small modification of one of these data structures, just describe your changes;

Data structuresdon'tregurgitate the original data structure details.

- binary numbers, including 2's complement representation of negative integers
- arrays
- linked lists (single and double, linear and circular)
- hash tables
- binary trees: worst-case depth is O(n)
- binary heaps
- binary search trees
- balanced search trees: worst-case depth is O(log n)

At least one of the following:B-trees (such as 2-3-trees or (a,b)-trees), AVL trees, red-black trees, splay trees, treaps, skip lists- adjacency matrices
- adjacency lists
The difference between this list and the previous list## You may use any of these algorithms in your homeworks and exams without providing further details or citing any source. If you use a small modification of one of these algorithms, just describe your changes;

Algorithmsdon'tregurgitate the original algorithm details.

- elementary arithmetic á la Al-Kwarizmi
- sequential search
- binary search
- comparison-based sorting:

- insertion sort, selection sort, (standard) quicksort: worst-case time is O(n²)
- mergesort, heapsort: worst-case time is O(n log n)
- radix sort
- binary tree traversal: pre-order, post-order, in-order, level-order
- depth-first search
- breadth-first search
- topological sorting
- Dijkstra's shortest-path algorithm