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]}.<{({({(z).(y)}.tf).({(z).(x)}.tf)}.pf).({(z).({(y).(x)}.pf)}.tf)}.eq>.{({({(y).(z)}.comtf).({(x).(z)}.comtf).({(z).(y)}.tf).({(y).(z)}.tf).({(z).(x)}.tf).({(x).(z)}.tf)}.eqpf12).({(y).(x).(z)}.satz71).({(z).({(y).(x)}.pf)}.comtf).({({(z).(y)}.tf).({(z).(x)}.tf)}.pf).({({(y).(z)}.tf).({(x).(z)}.tf)}.pf).({({(y).(x)}.pf).(z)}.tf).({(z).({(y).(x)}.pf)}.tf)}.tr3eq 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")