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 . [[   | Kevin Harnett ]] . 2026 . 510.2856 HAR . Beaverton Library (book not stamped)  . [[ https://kevinstenhartnett.com/ | Kevin Harnett ]] . 2026 . 510.2856 HAR . Beaverton Library (book not stamped)
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 .p003 [[ https://en.wikipedia.org/wiki/Leonardo_de_Moura | Leo de Moura ]] started [[ https://en.wikipedia.org/wiki/Lean_(proof_assistant) | Lean ]] project in 2013
 .p004 [[ https://en.wikipedia.org/wiki/Kevin_Buzzard | Kevin Buzzard ]] [[ https://leanprover-community.github.io/sphere-eversion/ | Patrick Massot ]] [[ https://math.commelin.net/ | Johan Commelin ]] [[ https://digama0.github.io/ | Mario Carneiro ]]
 .p009 [[ https://en.wikipedia.org/wiki/Thomas_Callister_Hales | Tom Hales b1958 ]] 1999 [[ https://en.wikipedia.org/wiki/Institute_for_Advanced_Study | Princeton Institute for Advanced Study ]]
 .p009 [[ https://en.wikipedia.org/wiki/Langlands_program | Langlands Program ]]
 .p010 [[ https://en.wikipedia.org/wiki/John_Horton_Conway | John Conway ]] 1982 lecture at Cambridge University
 .p010 [[ https://en.wikipedia.org/wiki/Kepler_conjecture | Kepler Conjecture ]] 1611 sphere packing density around 74% for both square and hexagonal base
 .p011 Hales proves conjecture 1993-4, 300 pages in [[ https://en.wikipedia.org/wiki/Annals_of_Mathematics | Annals of Mathematics ]] "3GB worth of computer calculations"??
 .p012 in 1900 [[ https://en.wikipedia.org/wiki/Hilbert's_problems | David Hilbert 23 most important open problems in mathematics ]] includes Kepler Conjecture
 .p014 [[ https://en.wikipedia.org/wiki/L%C3%A1szl%C3%B3_Fejes_T%C3%B3th | László Fejes Tóth ]] [[ https://en.wikipedia.org/wiki/Regular_Figures | Regular Figures ]]
 .p015 Hales 1760 cases of ball arrangement, cluster of Sun workstations
 .p016 early 1998 eliminated all but fifty arrangements, 30 in spring, 19 in June, down to one by July 4
 .p019 Four years later, peer reviews barely started
 .p020 [[ https://en.wikipedia.org/wiki/Proof_assistant | ITP ]] Interactive Theorem Prover aka Proof Assistant
 .p021 Writing formal language ITP proof takes orders of magnitude longer than by hand
 .p003 . [[ https://en.wikipedia.org/wiki/Leonardo_de_Moura | Leo de Moura ]] started [[ https://en.wikipedia.org/wiki/Lean_(proof_assistant) | Lean ]] project in 2013
 .p004 . [[ https://en.wikipedia.org/wiki/Kevin_Buzzard | Kevin Buzzard ]] [[ https://leanprover-community.github.io/sphere-eversion/ | Patrick Massot ]] [[ https://math.commelin.net/ | Johan Commelin ]] [[ https://digama0.github.io/ | Mario Carneiro ]]
 .p009 . [[ https://en.wikipedia.org/wiki/Thomas_Callister_Hales | Tom Hales b1958 ]] 1999 [[ https://en.wikipedia.org/wiki/Institute_for_Advanced_Study | Princeton Institute for Advanced Study ]]
 .p009 . [[ https://en.wikipedia.org/wiki/Langlands_program | Langlands Program ]]
 .p010 . [[ https://en.wikipedia.org/wiki/John_Horton_Conway | John Conway ]] 1982 lecture at Cambridge University
 .p010 . [[ https://en.wikipedia.org/wiki/Kepler_conjecture | Kepler Conjecture ]] 1611 sphere packing density around 74% for both square and hexagonal base
 .p011 . Hales proves conjecture 1993-4, 300 pages in [[ https://en.wikipedia.org/wiki/Annals_of_Mathematics | Annals of Mathematics ]] "3GB worth of computer calculations"??
 .p012 . in 1900 [[ https://en.wikipedia.org/wiki/Hilbert's_problems | David Hilbert 23 most important open problems in mathematics ]] includes Kepler Conjecture
 .p014 . [[ https://en.wikipedia.org/wiki/L%C3%A1szl%C3%B3_Fejes_T%C3%B3th | László Fejes Tóth ]] [[ https://en.wikipedia.org/wiki/Regular_Figures | Regular Figures ]]
 .p015 . Hales 1760 cases of ball arrangement, cluster of Sun workstations
 .p016 . early 1998 eliminated all but fifty arrangements, 30 in spring, 19 in June, down to one by July 4
 .p019 . [[ https://en.wikipedia.org/wiki/Mathematics,_Form_and_Function | Mathematics, Form and Function ]] by [[ https://en.wikipedia.org/wiki/Saunders_Mac_Lane | Saunders Mac Lane ]] (indexed "Mac Lane")
 .p019 . Four years later, peer reviews barely started
 .p020 . [[ https://en.wikipedia.org/wiki/Proof_assistant | ITP ]] Interactive Theorem Prover aka Proof Assistant
 .p021 . Writing formal language ITP proof takes orders of magnitude longer than by hand
 .p023 . Mechanically checkable form [[ http://www.proof-technologies.com/flyspeck/ | Flyspeck Project ]]
 .p023 . [[ https://books.google.com/books/about/Dense_Sphere_Packings.html?id=ROQYof3dOrYC | Dense Sphere Packings: A Blueprint for Formal Proofs ]] 286 page book
 .p024 . two available ITPs [[ https://sketis.net/isabelle | Isabelle ]] and [[ https://en.wikipedia.org/wiki/HOL_Light | HOL Light ]]
 .p025 . [[ https://en.wikipedia.org/wiki/Microsoft_Research | Microsoft Research ]] [[ https://en.wikipedia.org/wiki/Leonardo_de_Moura | Leo de Moura ]] born 1971 Rio de Janeiro
 .p027 . March 1989 [[ https://en.wikipedia.org/wiki/Pontifical_Catholic_University_of_Rio_de_Janeiro | Pontifical Catholic University of Rio de Janeiro ]]
 .p027 . internship at Semantic Designs (est 1993? 2026 dead link) in Austin Texas

 .p028 . Math objective, but problem importance is subjective
 .p028 . SRI 1946 now [[ https://en.wikipedia.org/wiki/SRI_International | SRI International ]]
 .p029 . LATEX, Siri
 .p029 . 2001 Symbolic Analysis Laboratory . SAL
 .p030 trace expressed as formula for all conditions that result in bad state???
 .p030 . [[ https://yices.csl.sri.com/ | Yices ]] [[ https://en.wikipedia.org/wiki/Satisfiability_modulo_theories | SMT solver ]]
 .p030 . [[ https://en.wikipedia.org/wiki/Automated_theorem_proving | Automated theorem proving ]] ATP
 .p031 . [[ https://www.microsoft.com/en-us/research/ | Microsoft Research ]] Thomas Ball
 .p031 . [[ https://en.wikipedia.org/wiki/Trustworthy_computing | Trustworthy Computing Initiative in 2002 ]]
 .p032 . de Moura joins Microsoft in August 2006
 .p033 . Microsoft ATPs, Zaputo, [[ https://www.researchgate.net/publication/220896279_Zap_Automated_Theorem_Proving_for_Software_Analysis | Zap ]], [[https://www.microsoft.com/en-us/research/publication/z3-an-efficient-smt-solver/ | Z3 ]]
 .p033 . [[ https://en.wikipedia.org/wiki/Satisfiability_modulo_theories#Standardization_and_the_SMT-COMP_solver_competition | SMT-COMP ]]
 .p035 . 2013, de Moura proposes new interactive theorem prover
 .p036 . [[ https://en.wikipedia.org/wiki/Ramon_Llull | Ramon Llull ]] [[ https://plato.stanford.edu/entries/llull/#FiguQuatPhasTheiFunc | Wheel of 16 divine attributes ]]
 .p037 . [[ https://en.wikipedia.org/wiki/Gottfried_Wilhelm_Leibniz | Leibniz ]] [[ https://en.wikipedia.org/wiki/Characteristica_universalis | characteristica universalis ]]
 .p037 . [[ https://en.wikipedia.org/wiki/Calculus_ratiocinator | calculus ratiocinator ]]
 .p038 . Leibniz - Art of Discovery
 .p040 . [[ https://en.wikipedia.org/wiki/Ernst_Zermelo | Ernst Zermelo ]] [[ https://en.wikipedia.org/wiki/Abraham_Fraenkel | Abraham Fraenkel ]] formal system to express all mathematics as [[ https://en.wikipedia.org/wiki/Zermelo%E2%80%93Fraenkel_set_theory | sets ]]
 .p041 . ZFC: '''Z'''ermelo-'''F'''raenkel set theory with the [[ https://en.wikipedia.org/wiki/Axiom_of_choice | axiom ]] of '''ch'''oice
 .p041 . [[ https://en.wikipedia.org/wiki/Bertrand_Russell | Russell ]] and [[ https://en.wikipedia.org/wiki/Alfred_North_Whitehead | Whitehead ]] [[ https://en.wikipedia.org/wiki/Principia_Mathematica | Principia Mathematica ]] 1910-13 [[ Ramified types and the axiom of reducibility | type theory ]] better
 .p042 . [[ https://en.wikipedia.org/wiki/Satisfiability | satisfiability (SAT) ]] solvers
 .p043 . [[ https://en.wikipedia.org/wiki/Satisfiability_modulo_theories | Satisfiability Modulo Theories (SMT) ]]
 .p047 . Interactive Theorem Provers (ITPs): [[ https://en.wikipedia.org/wiki/Rocq | Coq 1989 ]] [[ https://en.wikipedia.org/wiki/Agda_(programming_language) | Agda 1999 ]] [[ https://en.wikipedia.org/wiki/Isabelle_(proof_assistant) | Isabelle 1986 ]] [[ https://en.wikipedia.org/wiki/HOL_Light | HOL Light 1991 ]]
 .p052 . [[ https://en.wikipedia.org/wiki/Jeremy_Avigad | Jeremy Avigad ]] at [[ https://en.wikipedia.org/wiki/Carnegie_Mellon_University | Carnegie Mellon University ]]
 .p055 . Grant Passmore at [[ https://www.imandra.ai/about | Imandra AI ]]
 .p059 . [[ https://en.wikipedia.org/wiki/Goldbach%27s_conjecture | Goldbach's conjecture ]] all even numbers greater than two can be written as the sum of two primes
 .p060 . [[ https://en.wikipedia.org/wiki/Law_of_excluded_middle | law of the excluded middle ]]
 .p063 . [[ https://en.wikipedia.org/wiki/Lean_(proof_assistant) | Lean ]] helper programs called tactics
 .p065 . 2015 Lean 2
 .p076 . [[ https://scholar.google.com/citations?user=yaSqFaEAAAAJ&hl=en | Daniel Selsam ]] [[ https://en.wikipedia.org/wiki/David_L._Dill | David Dill ]]
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---- /!\ '''Edit conflict - other version:''' ----

---- /!\ '''Edit conflict - your version:''' ----


---- /!\ '''End of edit conflict''' ----

The Proof in the Code

How a Truth Machine Is Transforming Math and AI

  • Kevin Harnett . 2026 . 510.2856 HAR . Beaverton Library (book not stamped)



/!\ Edit conflict - other version:



/!\ Edit conflict - your version:



/!\ End of edit conflict


ProofInCode (last edited 2026-10-10 03:27:16 by KeithLofstrom)