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[o1:{(p).(sigma)}.ot].λ[o2:{(p).(sigma)}.ot].λ[i:{({(o2).(p).(sigma)}.in).({(o1).(p).(sigma)}.in).(sigma)}.is]}.<{(o2).(o1).({(p).(sigma)}.ot)}.is>.{(i).(o2).(o1).({(p).(sigma)}.otax1).(λ[x:{(p).(sigma)}.ot].{(x).(p).(sigma)}.in).(sigma).({(p).(sigma)}.ot)}.isfe 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")