πŸ“ˆπŸ”’πŸ€―

#ackermann function #rapid growth #recursion #computability theory

πŸ§ βˆ‘Ξ»

#lambda calculus #computability theory #mathematical logic #formal methods #Foundations of CS #type theory #recursion theory

πŸ§ Ξ»β™ΎοΈ

#lambda calculus #computability theory #undecidability #alonzo church #mathematical logic #theoretical foundations

Ξ»πŸ”

#lambda calculus #functional programming #computation model #computability theory #Church-Turing thesis #universal function

Ξ»Ξ£βˆ€βˆƒ

#formal methods #logic in computer science #theoretical computer science #computability theory #lambda calculus #sipser book

βš™οΈπŸ“œβ“πŸ›‘

#halting problem #undecidability #computability theory #decision problem #turing machine #recursive enumerability

βš™οΈβ–ΆοΈβ“πŸ›‘

#halting problem #undecidability #computability theory #turing machine #limits of computation #decision problem

πŸ’»β°(βœ…)β†’πŸ’»ΒΉ(❓)β†’πŸ’»Β²(πŸ€―β“)β†’...

#kleene hierarchy #computability theory #decidability #undecidability #halting problem #recursive sets #recursively enumerable sets #turing machine #complexity increase

βš™οΈπŸ“œβ―οΈβ“

#turing machine #halting problem #undecidable problem #computability theory #decision problem #theoretical computer science #run state

β™ΎοΈπŸ“œπŸ’‘

#turing machine #infinite tape #theoretical model #computability theory #computer science foundation #undecidability #abstract machine

πŸ’»β†’πŸ’»βŠ•πŸͺ™

#kleene hierarchy #turing jump #oracle machine #computability theory #relative computability #degrees of unsolvability #recursion theory #βˆ…' #halting problem oracle

Σ⁰ₙΠ⁰ₙΔ⁰ₙπŸͺœβ†’Σ⁰₁Π⁰₁Δ⁰₁πŸͺœβ†’Σ⁰₂...

#kleene hierarchy #arithmetical hierarchy #computability theory #recursion theory #Οƒ0n #Ο€0n #Ξ΄0n #quantifier complexity #levels of complexity