Nuprl Rule : functionIsType

This rule proved as lemma rule_isect_member_formation_true3 in file rules/rules_isect.v
 at https://github.com/vrahli/NuprlInCoq  
H  ⊢ istype(a:A ⟶ B)

  BY functionIsType z ()
  
  H  ⊢ istype(A)
  H z:A ⊢ istype(B[z/a])

Latex:
H    \mvdash{}  istype(a:A  {}\mrightarrow{}  B)

    BY  functionIsType  z  ()
   
    H    \mvdash{}  istype(A)
    H  z:A  \mvdash{}  istype(B[z/a])


Date html generated: 2019_06_20-PM-04_11_45
Last ObjectModification: 2018_09_25-PM-00_28_21

Theory : rules


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