Nuprl Definition : dl-equiv
(phi ⇐⇒ psi) ==  |= phi ⇒ psi ∧ |= psi ⇒ phi
Definitions occuring in Statement : 
dl-valid: |= phi, 
dl-implies: x1 ⇒ x, 
and: P ∧ Q
Definitions occuring in definition : 
and: P ∧ Q, 
dl-valid: |= phi, 
dl-implies: x1 ⇒ x
FDL editor aliases : 
dl-equiv
Latex:
(phi  \mLeftarrow{}{}\mRightarrow{}  psi)  ==    |=  phi  {}\mRightarrow{}  psi  \mwedge{}  |=  psi  {}\mRightarrow{}  phi
Date html generated:
2019_10_15-AM-11_44_13
Last ObjectModification:
2019_03_27-AM-00_12_54
Theory : dynamic!logic
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