λδ digital library (LDDL)
Constant
![\lambda\delta butterfly [butterfly]](http://helm.cs.unibo.it/lambdadelta/images/b5.png)
Informal description: ""
{λ[sigma:Set].λ[s0:(sigma).set].λ[e:{(s0).(sigma)}.empty].λ[s:sigma]}.<({(s0).(s).(sigma)}.esti).not>.(s).e Validation parameters: sort hierarchy = "Z2", kernel options = ""
Last update: Sat, 12 Dec 2020 10:46:54 +0100