anton-petrunin

kiselyov

Геометрия по Киселёву

birkhoff

Euclidean plane and its relatives; a minimalist introduction.

calc3book

Corral's Vector Calculus

book

"Alexandrov geometry: foundations" by S. Alexander, V. Kapovitch, and A. Petrunin

gauss

"What is differential geometry: curves and surfaces" by Anton Petrunin and Sergio Zamora Barrera

invitation

"An invitation to Alexandrov geometry: CAT(0) spaces" by S. Alexander, V. Kapovitch, and A. Petrunin

puzzles

PIGTIKAL (puzzles in geometry that I know and love)

graph-theory

Extra pearls in graph theory

427

MATH 427, FOUNDATIONS OF GEOMETRY, FALL 2017

benders

invitation-CBB

alexandrov

Александровская геометрия

anton-petrunin.github.io

personal page

CAT-rigidity

convexity

Semiconcave functions in Alexandrov's geometry

curvature-tensor

"Curvature tensor of smoothable Alexandrov spaces" by Nina Lebedeva and Anton Petrunin

fary-milnor

"Six proofs of the Fáry–Milnor theorem" by Anton Petrunin and Stephan Stadler

graph-alexandrov

"Graph comparison meets Alexandrov" by Nina Lebedeva and Anton Petrunin

homogen

"All-set-homogeneous spaces" by Nina Lebedeva and Anton Petrunin

metric-geometry

"Lectures on metric geometry" by Anton Petrunin

metric-min

Metric minimzing surfaces revisited by Anton Petrunin and Stephan Stadler

octahedron-comparison

"Trees meet octahedron comparison" by Nina Lebedeva and Anton Petrunin

saddle-disc

Monotonicity of saddle maps, by Anton Petrunin and Stephan Stadler

sympl

Предварительный вариант перевода книжки «Геометрия группы симплектоморфизмов» Л. В. Полтеровича

test

test

topology

Introduction to topology

toponogov-5

"Five-point Toponogov theorem" by Nina Lebedeva and Anton Petrunin

tube-nbhd

Tubed embeddings

turgor

Tournament of Towns in State College, PA, USA

twist

"Gromov's tori are optimal" by Anton Petrunin