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Theorem base for Specification nat-pair

This is a listing of all goals defined over the current specification. Axioms are marked yellow, proved theorems green and unproved theorems blue. Click on individual names to get more information on the proof.

Name: Sequent: Type:
max-zero-02 ⊦ maxenc(0) = 0 A User Theorem
max-le ⊦ maxenc(m) ≤ m A User Theorem
max-def ⊦ (n * (n + 1)) / 2 ≤ m ∧ m < ((n + 1) * (n + 2)) / 2 ∧ (m0 * (m0 + 1)) / 2 ≤ m → maxenc(m0, m) = n A User Theorem
max-two ⊦ maxenc(2) = 1 A User Theorem
snd-ls ⊦ m.2 < m ↔ m ≠ 0 A User Theorem
max-zero ⊦ maxenc(m) = 0 ↔ m = 0 A User Theorem
snd-zero ⊦ 0.2 = 0 A User Theorem
max-def-01 ⊦ (n * (n + 1)) / 2 ≤ m ∧ m < ((n + 1) * (n + 2)) / 2 → maxenc(m) = n A User Theorem
encode-def ⊦ encode(m, n) = ((m + n) * (m + n + 1)) / 2 + n An Axiom
snd-eq ⊦ m.2 = m ↔ m = 0 A User Theorem
dec-snd ⊦ m.2 = m - (maxenc(m) * (maxenc(m) + 1)) / 2 An Axiom
max-square ⊦ maxenc(((m + n) * (m + n + 1)) / 2 + n) = m + n A User Theorem
maxi-rec ⊦ ((m + 1) * (m + 2)) / 2 ≤ n → maxenc(m, n) = maxenc(m + 1, n) An Axiom
max-zero-01 ⊦ maxenc(m) = 1 ↔ m = 1 ∨ m = 2 A User Theorem
enc-invert ⊦ encode(m.1, m.2) = m A User Theorem
dec-fst ⊦ m.1 = maxenc(m) - m.2 An Axiom
fst-def ⊦ encode(m, n).1 = m A User Theorem
exencode ⊦ ∃ m, n. encode(m, n) = n0 A User Theorem
max-size-01 ⊦ maxenc(m) * (maxenc(m) + 1) ≤ 2 * m ∧ 2 * m < (maxenc(m) + 1) * (maxenc(m) + 2) A User Theorem
fst-ls-01 ⊦ m.1 < m ↔ m ≠ 0 ∧ m ≠ 1 A User Theorem
snd-def ⊦ encode(m, n).2 = n A User Theorem
max-one ⊦ maxenc(1) = 1 A User Theorem
max-snd-nle ⊦ m ≠ 0 ∧ m ≠ 1 → ¬ m + m.2 ≤ maxenc(m) A User Theorem
fst-zero ⊦ 0.1 = 0 A User Theorem
maxi-start ⊦ maxenc(n) = maxenc(0, n) An Axiom
max-bigger ⊦ m ≤ maxenc(m, n) A User Theorem
max-size ⊦ (maxenc(m) * (maxenc(m) + 1)) / 2 ≤ m ∧ m < ((maxenc(m) + 1) * (maxenc(m) + 2)) / 2 A User Theorem
max-rev-01 ⊦ maxenc(m) = n → (n * (n + 1)) / 2 ≤ m ∧ m < ((n + 1) * (n + 2)) / 2 A User Theorem
fst-one ⊦ 1.1 = 1 A User Theorem
encode-zero-01 ⊦ encode(0, 0) = 0 A User Theorem
maxi-found ⊦ ¬ ((m + 1) * (m + 2)) / 2 ≤ n → maxenc(m, n) = m An Axiom
snd-nlem0 ≠ 0 ⊦ n + m * (* m0) ≤ m.2 ↔ m = 0 ∧ n = 0 A User Theorem
snd-one ⊦ 1.2 = 0 A User Theorem
snd-le ⊦ m.2 ≤ m A User Theorem
injectivity ⊦ encode(m, n) = encode(m0, n0) ↔ m = m0 ∧ n = n0 A User Theorem
encode-zero ⊦ encode(m, n) = 0 ↔ m = 0 ∧ n = 0 A User Theorem
max-nls ⊦ ¬ m < (maxenc(m) * maxenc(m) + maxenc(m)) / 2 A User Theorem
fst-ls ⊦ m.1 ≤ m A User Theorem
fst-nlem0 ≠ 0, m0 ≠ 1 ⊦ n + m * (* m0) ≤ m.1 ↔ m = 0 ∧ n = 0 A User Theorem
max-snd-nls ⊦ ¬ maxenc(m) < m.2 A User Theorem
max-snd-le ⊦ m.2 ≤ maxenc(m) A User Theorem
max-rev ⊦ maxenc(m0, m) = n ∧ (m0 * (m0 + 1)) / 2 ≤ m → (n * (n + 1)) / 2 ≤ m ∧ m < ((n + 1) * (n + 2)) / 2 A User Theorem