λδ digital library (LDDL)
Constant
![[spacer]](http://lambdadelta.info/images/b5.png "lambdadelta butterfly")
Informal description: ""
{λ[y:
nat
]
.
λ[l:{(y)
.
(
1
)}
.
less
]
.
λ[f:Π[t:(
1
)
.
1to
]
.
(y)
.
1to
]
.
λ[i:{({(f)
.
(l)
.
(y)}
.
1y
)
.
((
1o
)
.
f)
.
((y)
.
1to
)}
.
is
]}
.
<({(f)
.
((y)
.
1to
)
.
((
1
)
.
1to
)}
.
surjective
)
.
not
>
.
{({(i)
.
(f)
.
(l)
.
(y)}
.
t6
)
.
({(f)
.
(l)
.
(y)}
.
yy
)
.
(λ[u:(y)
.
1to
]
.
{(u)
.
(f)
.
((y)
.
1to
)
.
((
1
)
.
1to
)}
.
image
)
.
((y)
.
1to
)}
.
th1
Validation parameters: sort hierarchy = "Z2", kernel options = ""
Last update: Sun, 04 Jan 2015 22:01:26 +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")