rocq-community / rocq-community/math-classes

Fix inner product space laws

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Rocq Prover
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Description

One needs the additional axioms, see #15.

   ; in_pos_def1    :> ∀ v, PropHolds (0 ≤ ⟨v,v⟩)
   ; in_pos_def2    :> ∀ v, 0 = ⟨v,v⟩ <-> v = mon_unit
   ; inprod_proper :> Proper ((=) ==> (=) ==> (=)) (⟨⟩)

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading issue #15 for the missing inner product space laws, then locate the inner product space interface containing the shown Coq declarations. Confirm how the three proposed axioms fit the existing structure and ensure the interface includes the required laws.

Written by the indexing model from the issue text.

Assessment

Domain
tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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