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Topic: [isabelle] new AFP entry: Minkowski's Theorem


view this post on Zulip Email Gateway (Aug 22 2022 at 15:46):

From: Gerwin Klein <gerwin.klein@data61.csiro.au>
https://www.isa-afp.org/entries/Minkowskis_Theorem.shtml

Minkowski's Theorem
by Manuel Eberl

Minkowski's theorem relates a subset of ℝ^n, the Lebesgue measure, and the integer lattice ℤ^n: It states that any convex subset of ℝ^n with volume greater than 2^n contains at least one lattice point from ℤ^n\{0}, i. e. a non-zero point with integer coefficients.

A related theorem which directly implies this is Blichfeldt's theorem, which states that any subset of ℝ^n with a volume greater than 1 contains two different points whose difference vector has integer components.

The entry contains a proof of both theorems.

Enjoy!
Gerwin

view this post on Zulip Email Gateway (Aug 22 2022 at 15:47):

From: Gerwin Klein <kleing@unsw.edu.au>
https://www.isa-afp.org/entries/Minkowskis_Theorem.shtml

Minkowski's Theorem
by Manuel Eberl

Minkowski's theorem relates a subset of ℝ^n, the Lebesgue measure, and the integer lattice ℤ^n: It states that any convex subset of ℝ^n with volume greater than 2^n contains at least one lattice point from ℤ^n\{0}, i. e. a non-zero point with integer coefficients.

A related theorem which directly implies this is Blichfeldt's theorem, which states that any subset of ℝ^n with a volume greater than 1 contains two different points whose difference vector has integer components.

The entry contains a proof of both theorems.

Enjoy!
Gerwin


Last updated: Nov 21 2024 at 12:39 UTC