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skills/foryourhealth111-pixel/Vibe-Skills/bundled-skills-cs-foundations

cs-foundations

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foryourhealth111-pixel/Vibe-Skills·Education·Audit passed·Snapshot 790fb6281238
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Summary

Master discrete mathematics, logic, formal proofs, and computational thinking. Build the mathematical foundation for all computer science.

SKILL.md

CS Foundations Skill

Skill Metadata

skill_config:
  version: "1.0.0"
  category: theoretical
  prerequisites: []
  estimated_time: "6-8 weeks"
  difficulty: intermediate

  parameter_validation:
    topic:
      type: string
      enum: [logic, proofs, sets, functions, combinatorics, number-theory, graphs]
      required: true
    depth:
      type: string
      enum: [intro, standard, advanced]
      default: standard

  retry_config:
    max_attempts: 3
    backoff_strategy: exponential
    initial_delay_ms: 500

  observability:
    log_level: INFO
    metrics: [topic_usage, proof_verification_rate, exercise_completion]

Quick Start

Computer science is built on mathematics. Master these fundamentals:

Core Topics

Discrete Mathematics

  • Set theory and operations
  • Logic and proof techniques
  • Combinatorics and counting
  • Number theory basics
  • Relations and functions

Computational Thinking

  • Problem decomposition
  • Abstraction and generalization
  • Pattern recognition
  • Algorithmic thinking

Formal Logic

  • Propositional logic
  • Predicate logic
  • Proof by induction
  • Truth tables and logical equivalence

Learning Path

Week 1: Logic Basics

  • Boolean algebra
  • Truth tables
  • Logical operators
  • Inference rules

Week 2: Proof Techniques

  • Direct proof
  • Proof by contradiction
  • Mathematical induction
  • Strong induction

Week 3: Set Theory

  • Set operations (∪, ∩, complement)
  • Cartesian product
  • Relations
  • Equivalence relations
  • Week 4: Functions

    • Function notation
    • Domain, codomain, range
    • One-to-one and onto
    • Function composition

    Week 5: Combinatorics

    • Counting principles
    • Permutations
    • Combinations
    • Pigeonhole principle

    Week 6: Number Theory

    • Modular arithmetic
    • Prime numbers
    • GCD and Euclidean algorithm
    • Congruence

    Practice Problems

    1. Prove by induction that 1+2+...+n = n(n+1)/2
    2. Prove √2 is irrational
    3. Show A ∪ (B ∩ C) = (A ∪ B) ∩ (A ∪ C)
    4. Count functions from {1,2,3} to {a,b}
    5. Solve: x ≡ 5 (mod 12) and x ≡ 3 (mod 8)

    Troubleshooting

    IssueRoot CauseResolution
    Proof stuckMissing case or wrong directionCheck base case, verify induction step
    Set operation confusion∪ vs ∩ mix-upDraw Venn diagram
    Counting errorOvercounting duplicatesDistinguish P(n,r) vs C(n,r)
    Modular arithmetic errorForgot wraparoundWork with remainders explicitly

    Key Concepts

    • Axioms: Statements we assume true
    • Theorems: Statements we prove
    • Lemmas: Helper theorems
    • Corollaries: Results that follow easily

    Why It Matters

    These foundations enable:

    • Understanding algorithm correctness
    • Analyzing computational complexity
    • Designing new algorithms
    • Proving algorithm properties
    • Understanding what's computable

    Interview Prep

    • Explain mathematical induction
    • Prove that a function is injective
    • Count permutations with constraints
    • Solve modular equations
    • Apply pigeonhole principle

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