λδ digital library (LDDL)
Constant
![\lambda\delta butterfly [butterfly]](http://helm.cs.unibo.it/lambdadelta/images/b5.png)
Informal description: ""
{λ[x:frac].λ[y:frac].λ[z:frac].λ[e:{({(y).(z)}.pf).({(x).(z)}.pf)}.eq]}.<{(y).(x)}.eq>.{({({(y).(z)}.compf).(e).({(z).(x)}.compf).({(z).(y)}.pf).({(y).(z)}.pf).({(x).(z)}.pf).({(z).(x)}.pf)}.tr3eq).(z).(y).(x)}.satz63b Validation parameters: sort hierarchy = "Z2", kernel options = ""
Last update: Sat, 12 Dec 2020 10:46:54 +0100