λδ digital library (LDDL)
Constant
![[spacer]](http://lambdadelta.info/images/b5.png "lambdadelta butterfly")
Informal description: ""
{λ[x:
nat
]
.
λ[y:
nat
]}
.
<{({(x)
.
(y)}
.
pl
)
.
({(y)
.
(x)}
.
pl
)}
.
is
>
.
{(y)
.
(x)}
.
satz6
Validation parameters: sort hierarchy = "Z2", kernel options = ""
Last update: Sun, 04 Jan 2015 23:00:12 +0100
![[lambdadelta home]](http://lambdadelta.info/images/crux_32.png "lambdadelta home")
![[Spacer]](http://lambdadelta.info/images/rainbow.png "lambdadelta rainbow rule")
![[Generated from XML via XSL]](http://lambdadelta.info/images/xml_xsl2.png "Generated from XML via XSL")
![[Powered by Helena lambdadelta processor]](http://lambdadelta.info/images/helena_label.png "Powered by Helena lambdadelta processor")
![[PNG used here]](http://lambdadelta.info/images/PNGnow2.png "PNG used here")
![[Viewable with any browser]](http://www.anybrowser.org/campaign/bvgraphics/abtfile.png "Viewable with any browser")