FormalConjectures/OEIS/256012.lean

GitHub source file

Explanation legend Lean4 Domain Explanation Language (L4DEL)

L4DEL explanations are a separate layer. They do not change the Lean source. Intuition is explanatory prose; numbered items are a reading path; sources link the wording back to evidence.

L4DEL
Lean4 Domain Explanation Language

Credit: The upstream authors and contributors retain credit for the project and mathematics. lean4-explainer only renders their pinned source and adds the separately disclosed explanation layer.

Project sources: Pinned project documentation, Formal Conjectures paper, arXiv v1

7 declarations, 1 contain sorry, 0 declared as axioms

Partitions of $n$ into distinct non-squarefree parts for $n > 23$

a: Number of partitions of $n$ into distinct parts that are not squarefree. This is the number of finite subsets of positive integers $P$ such that $\sum_{k \in P} k = n$ and every element $k \in P$ is not squarefree.

References:

Imports (1)
  1. def OeisA256012.a a: Number of partitions of $n$ into distinct parts that are not squarefree line 45 source

    Source documentation

    a: Number of partitions of $n$ into distinct parts that are not squarefree. This is the number of finite subsets of positive integers $P$ such that $\sum_{k \in P} k = n$ and every element $k \in P$ is not squarefree.

    standard axioms: Classical.choice, Quot.sound, propext what this means

    Statement uses: Nat

    Proof uses: Finset, SDiff.sdiff, Finset.range, HAdd.hAdd, OfNat.ofNat, Singleton.singleton, Finset.card, Finset.filter, And, Eq, Finset.sum, id, Membership.mem, Not, Squarefree, Finset.powerset

    14 instances, coercions and auxiliary constants left out.

    def a (n : ℕ) : ℕ :=
    …
  2. lemma OeisA256012.a_0 line 58 source

    standard axioms: Classical.choice, Quot.sound, propext what this means

    Statement uses: Eq, Nat, OeisA256012.a, OfNat.ofNat

    Proof uses: of_decide_eq_true, id, Bool, Decidable.decide, Bool.true, Eq.refl

    3 instances, coercions and auxiliary constants left out.

    Tactic trace: 1 steps

    Open to load the checked before-and-after goal states.

  3. lemma OeisA256012.a_1 line 61 source

    standard axioms: Classical.choice, Quot.sound, propext what this means

    Statement uses: Eq, Nat, OeisA256012.a, OfNat.ofNat

    2 instances, coercions and auxiliary constants left out.

    Tactic trace: 1 steps

    Open to load the checked before-and-after goal states.

  4. lemma OeisA256012.a_2 line 64 source

    standard axioms: Classical.choice, Quot.sound, propext what this means

    Statement uses: Eq, Nat, OeisA256012.a, OfNat.ofNat

    2 instances, coercions and auxiliary constants left out.

    Tactic trace: 1 steps

    Open to load the checked before-and-after goal states.

  5. lemma OeisA256012.a_3 line 67 source

    standard axioms: Classical.choice, Quot.sound, propext what this means

    Statement uses: Eq, Nat, OeisA256012.a, OfNat.ofNat

    2 instances, coercions and auxiliary constants left out.

    Tactic trace: 1 steps

    Open to load the checked before-and-after goal states.

  6. lemma OeisA256012.a_4 line 70 source

    standard axioms: Classical.choice, Quot.sound, propext what this means

    Statement uses: Eq, Nat, OeisA256012.a, OfNat.ofNat

    2 instances, coercions and auxiliary constants left out.

    Tactic trace: 1 steps

    Open to load the checked before-and-after goal states.

  7. theorem OeisA256012.a_pos_of_gt sorry line 81 source

    depends on sorry what this means

    Statement uses: Nat, GT.gt, OfNat.ofNat, OeisA256012.a

    Proof uses: sorryAx, Lean.Name, Bool.false, Lean.Name.num, Lean.Name.str, Lean.Name.anonymous

    4 instances, coercions and auxiliary constants left out.

    Tactic trace: 1 steps

    Open to load the checked before-and-after goal states.