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Theorem ascsubseq-rem

⊦ ascsubseq(ix0 + n ' + ix1, x) → (¬ ascsubseq(ix0 + ix1, x) ↔ false)

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: theoremx-atmost-h,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 9
Proof steps: 24
Used lemmas: precedes-def, ascsubseq-base, ascsubseq-single, ascsubseq-rec, ascsubseq-prepend,
Used spec theorems:
- Used simplifier rules:
  - list/indexseq/Nil
  - list/indexseq/app
  - nat-basic1/ls-02
  - list/indexseq/c
  - list-data/l
  - nat-basic2/succ
  - oelem/transitivity
  - nat-basic1/lf
  - oelem/indexseq/transitivity
  - oelem/nll
  - nat-basic1/f
  - nat/fle
  - nat/le-ls-simp
  - nat/lels
  - list/indexseq/a