λδ digital library (LDDL)
Constant
![[butterfly]](http://helm.cs.unibo.it/lambdadelta/images/b5.png "\lambda\delta butterfly")
Informal description: ""
{λ[y:nat].λ[l:{(y).(1)}.less].λ[f:Π[t:(1).1to].(y).1to].λ[n:({({(f).(l).(y)}.1y).((1o).f).((y).1to)}.is).not]}.<({({(f).(l).(y)}.1y).(f).((y).1to).((1).1to)}.image).not>.{(λ[u:(1).1to].{({(u).(n).(f).(l).(y)}.t8).({(f).(l).(y)}.1y).((u).f).((y).1to)}.symnotis).(λ[u:(1).1to].{((u).f).({(f).(l).(y)}.1y).((y).1to)}.is).((1).1to)}.th5 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")