λδ digital library (LDDL)
Constant
![\lambda\delta butterfly [butterfly]](http://helm.cs.unibo.it/lambdadelta/images/b5.png)
Informal description: ""
{λ[x:nat].λ[y:nat].λ[u:(y).1to].λ[v:(y).1to].λ[i:{({(v).(y).(x)}.right1to).({(u).(y).(x)}.right1to).(({(y).(x)}.pl).1to)}.is]}.<{(v).(u).((y).1to)}.is>.{({(i).(v).(u).(y).(x)}.t7).(v).(u).(y)}.isinne Validation parameters: sort hierarchy = "Z2", kernel options = ""
Last update: Sat, 12 Dec 2020 10:46:54 +0100