λδ digital library (LDDL)
Constant
![[butterfly]](http://helm.cs.unibo.it/lambdadelta/images/b5.png "\lambda\delta butterfly")
Informal description: ""
{λ[r:real].λ[s:real].λ[a1:dif].λ[b1:dif].λ[a1ir:{((r).class).(a1)}.inn].λ[b1is:{((s).class).(b1)}.inn].λ[n:({(0).(r)}.is).not].λ[o:({(0).(s)}.is).not].λ[i:{(({((s).abs).((r).abs)}.ts).m0).({(s).(r)}.ts)}.is].λ[a:{((b1).posd).((a1).negd)}.and]}.<{((s).pos).((r).neg)}.and>.{({({(a).((b1).posd).((a1).negd)}.ande2).(b1is).(b1).(s)}.posin).({({(a).((b1).posd).((a1).negd)}.ande1).(a1ir).(a1).(r)}.negin).((s).pos).((r).neg)}.andi 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")