FormalConjectures/OEIS/194806.lean
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
8 declarations, 1 contain sorry, 0 declared as axioms
Size of smallest subset of $\{1, 2, \dots, n\}$ with distinct subset sums
Size of the smallest subset $S$ of $T = \{1,2,3,\dots,n\}$ such that $S \cdot S$ contains $T$, where $S \cdot S$ is the set of all products of elements of $S$.
References:
- A194806
- arxiv/2605.22763 Advancing Mathematics Research with AI-Driven Formal Proof Search by George Tsoukalas et al.
Imports (1)
- def
OeisA194806.setProdThe set of all products of elements from a Finset S line 40 sourceSource documentation
The set of all products of elements from a Finset S.
standard axioms: Classical.choice, Quot.sound, propext what this means
Statement uses:
Finset,NatProof uses:
Finset.image,Prod,HMul.hMul,Prod.fst,Prod.snd,Finset.product3 instances, coercions and auxiliary constants left out.
def setProd (S : Finset ℕ) : Finset ℕ := …
- def
OeisA194806.aSize of the smallest subset $S$ of $T = \{1,2,3,\dots,n\}$ such that $S \cdot S$ contains $T$, where $S \cdot S$ is the set of all products of elements of $S$ line 48 sourceSource documentation
Size of the smallest subset $S$ of $T = \{1,2,3,\dots,n\}$ such that $S \cdot S$ contains $T$, where $S \cdot S$ is the set of all products of elements of $S$.
standard axioms: Classical.choice, Quot.sound, propext what this means
Statement uses:
NatProof uses:
dite,Eq,OfNat.ofNat,Not,Finset,Finset.Icc,Finset.filter,LE.le, OeisA194806.setProd,Finset.powerset,Membership.mem,Finset.Nonempty,Finset.image,Finset.card,Finset.min'14 instances, coercions and auxiliary constants left out.
Tactic trace: 14 steps
Open to load the checked before-and-after goal states.
def a (n : ℕ) : ℕ := …
- lemma
OeisA194806.a_1line 91 sourcestandard axioms: Classical.choice, Quot.sound, propext what this means
Statement uses:
Eq,Nat, OeisA194806.a,OfNat.ofNatProof uses:
Eq.refl2 instances, coercions and auxiliary constants left out.
Tactic trace: 1 steps
Open to load the checked before-and-after goal states.
- lemma
OeisA194806.a_2line 94 sourcestandard axioms: Classical.choice, Quot.sound, propext what this means
Statement uses:
Eq,Nat, OeisA194806.a,OfNat.ofNatProof uses:
Eq.refl2 instances, coercions and auxiliary constants left out.
Tactic trace: 1 steps
Open to load the checked before-and-after goal states.
- lemma
OeisA194806.a_3line 97 sourcestandard axioms: Classical.choice, Quot.sound, propext what this means
Statement uses:
Eq,Nat, OeisA194806.a,OfNat.ofNatProof uses:
Eq.refl2 instances, coercions and auxiliary constants left out.
Tactic trace: 1 steps
Open to load the checked before-and-after goal states.
- lemma
OeisA194806.a_4line 100 sourcestandard axioms: Classical.choice, Quot.sound, propext what this means
Statement uses:
Eq,Nat, OeisA194806.a,OfNat.ofNatProof uses:
Eq.refl2 instances, coercions and auxiliary constants left out.
Tactic trace: 1 steps
Open to load the checked before-and-after goal states.
- lemma
OeisA194806.a_5line 103 sourcestandard axioms: Classical.choice, Quot.sound, propext what this means
Statement uses:
Eq,Nat, OeisA194806.a,OfNat.ofNatProof uses:
Eq.refl2 instances, coercions and auxiliary constants left out.
Tactic trace: 1 steps
Open to load the checked before-and-after goal states.
- theorem
OeisA194806.a_div_prime_counting_boundedsorry line 114 sourcedepends on sorry what this means
Statement uses:
Exists,Real,Nat,LE.le,OfNat.ofNat,HDiv.hDiv, OeisA194806.a,Nat.primeCountingProof uses:
sorryAx,Lean.Name,Bool.false,Lean.Name.num,Lean.Name.str,Lean.Name.anonymous16 instances, coercions and auxiliary constants left out.
Tactic trace: 1 steps
Open to load the checked before-and-after goal states.