Opened 4 years ago

Closed 4 years ago

#18989 closed defect (fixed)

Incorrect input_alphabet in FiniteStateMachine.disjoint_union

Reported by: cheuberg Owned by:
Priority: major Milestone: sage-6.9
Component: finite state machines Keywords:
Cc: skropf, dkrenn Merged in:
Authors: Clemens Heuberger Reviewers: Daniel Krenn
Report Upstream: N/A Work issues:
Branch: 7aa672a (Commits) Commit: 7aa672ae2d791d003b62190508847c7b6123c210
Dependencies: #18557 Stopgaps:

Description

The following behaviour is a bug: 

sage: A = Automaton([(0, 0, 0)])
sage: B = Automaton([(0, 0, 1)])
sage: A.input_alphabet
[0]
sage: B.input_alphabet
[1]
sage: (A + B).input_alphabet
[0]

The resulting input alphabet should be [0, 1].

Change History (3)

comment:1 Changed 4 years ago by cheuberg

  • Branch set to u/cheuberg/fsm/disjoint_union_alphabet
  • Commit set to 7aa672ae2d791d003b62190508847c7b6123c210
  • Status changed from new to needs_review

New commits:

​ea021ccTrac #18556: FiniteStateMachine.is_deterministic: several initial states
​ff3a5d8Trac #18557: Implement FiniteStateMachine.disjoint_union (and .__or__)
​a89d3eaTrac #18557: One typo
​fee74b1Trac #18557: Remark on alternative notation in documentation
​7aa672aTrac #18989: Incorrect input_alphabet in disjoint_union

comment:2 Changed 4 years ago by dkrenn

  • Reviewers set to Daniel Krenn
  • Status changed from needs_review to positive_review

Everything looks fine.

comment:3 Changed 4 years ago by vbraun

  • Branch changed from u/cheuberg/fsm/disjoint_union_alphabet to 7aa672ae2d791d003b62190508847c7b6123c210
  • Resolution set to fixed
  • Status changed from positive_review to closed
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