λδ digital library (LDDL)
Constant
![[butterfly]](http://helm.cs.unibo.it/lambdadelta/images/b5.png "\lambda\delta butterfly")
Informal description: ""
{λ[x:frac].λ[y:frac].λ[z:frac].λ[u:frac].λ[l:{(y).(x)}.lesseq].λ[e:{(z).(x)}.eq].λ[f:{(u).(y)}.eq]}.<{(u).(z)}.lesseq>.{(λ[t:{(y).(x)}.eq].{(t).(f).(e).(l).(u).(z).(y).(x)}.t2).(λ[t:{(y).(x)}.lessf].{(t).(f).(e).(l).(u).(z).(y).(x)}.t1).(l).({(u).(z)}.lesseq).({(y).(x)}.eq).({(y).(x)}.lessf)}.orapp 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")