λδ digital library (LDDL)
Constant
![[butterfly]](http://helm.cs.unibo.it/lambdadelta/images/b5.png "\lambda\delta butterfly")
Informal description: ""
{λ[sigma:Set].λ[p:∀[x:sigma].Prop].λ[q:∀[x:sigma].Prop].λ[s:{(p).(sigma)}.some].λ[i:∀[x:sigma].{((x).q).((x).p)}.imp]}.<{(q).(sigma)}.some>.{(λ[x:sigma].λ[y:(x).p].{({((x).i).(y).((x).q).((x).p)}.mp).(x).(q).(sigma)}.somei).({(q).(sigma)}.some).(s).(p).(sigma)}.someapp Validation parameters: sort hierarchy = "Z2", kernel options = ""
Last update: Sat, 12 Dec 2020 10:46:54 +0100
![[Spacer]](http://helm.cs.unibo.it/lambdadelta/images/rainbow.png "\lambda\delta rainbow rule")
![[Generated from XML via XSL]](http://helm.cs.unibo.it/lambdadelta/images/xml_xsl2.png "Generated from XML via XSL")
![[PNG used here]](http://helm.cs.unibo.it/lambdadelta/images/PNGnow2.png "PNG used here")
![[Viewable with any browser]](http://www.anybrowser.org/campaign/bvgraphics/abtfile.png "Viewable with any browser")