λδ digital library (LDDL)
Constant
![[butterfly]](http://helm.cs.unibo.it/lambdadelta/images/b5.png "\lambda\delta butterfly")
Informal description: ""
{λ[x0:rat].λ[y0:rat].λ[x1:frac].λ[y1:frac].λ[x1ix0:{((x0).class).(x1)}.inf].λ[y1iy0:{((y0).class).(y1)}.inf].λ[l:{(y1).(x1)}.lessf]}.<{(y0).(x0)}.less>.{({(l).(y1iy0).(x1ix0).(y1).(x1).(y0).(x0)}.t17).(x1).(λ[u:frac].{(λ[t:frac].{(t).(u).(y0).(x0)}.propl).(frac)}.some).(frac)}.somei 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")