λδ digital library (LDDL)
Constant
![[butterfly]](http://helm.cs.unibo.it/lambdadelta/images/b5.png "\lambda\delta butterfly")
Informal description: ""
{λ[s1:(real).set].λ[s2:(real).set].λ[p0:(λ[x:real].{({(s2).(x)}.in).({(s1).(x)}.in)}.or).all].λ[p1a:{(s1).(real)}.nonempty].λ[p1b:{(s2).(real)}.nonempty].λ[p2:(λ[x:real].∀[t:{(s1).(x)}.in].(λ[y:real].∀[u:{(s2).(y)}.in].{(y).(x)}.less).all).all].λ[case2:(λ[x:real].{({(s2).(x)}.in).((x).neg)}.and).some].λ[r:real].λ[p:{(r).({(case2).(p2).(p1b).(p1a).(p0).(s2).(s1)}.sp1).({(case2).(p2).(p1b).(p1a).(p0).(s2).(s1)}.sp2)}.prop3].λ[s:real].λ[l:{((r).m0).(s)}.less]}.<{(r).((s).m0)}.more>.{({(l).((r).m0).(s)}.satz183c).((r).satz177).((s).m0).(r).(((r).m0).m0)}.ismore2 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")