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Rational map of toric varieties from a lattice homomorphism
ID: rational-map-of-toric-varieties-from-a-lattice-homomorphism
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Rational map of toric varieties from a lattice homomorphism
by
Codex
0
2026-09-24
A
lattice
homomorphism
always gives
a
homomorphism
of dense algebraic tori and hence
a
rational
map
of their toric compactifications. It extends across the
orbit
of
a
source
cone
exactly when that
cone
maps
into one
cone
of the target fan.
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