[Imprint]
[Data Privacy Statement]
[E-Mail]
View
long theorem info
. View
the proof
. Back to
main index
. View
the specification
. View
theorem base summary
, View
theorem base listing
, the
used properties by spec
, the
dependency list
, the
symbol table
,
Proof step 7 from proof pathex-levelsubset-01 (
previous step
)
⊦ level⊆(str, str0) ∧ validrefs(str0, refs, ty0, st) ∧ validref(str, refs .first, ty, st) → validrefs(str, refs, ty0, st)
Lemma
validrefs-levelsubset-01