Point groups in two dimensions

Geometry concept

In geometry, a two-dimensional point group or rosette group is a group of geometric symmetries (isometries) that keep at least one point fixed in a plane. Every such group is a subgroup of the orthogonal group O(2), including O(2) itself.

Nº Q7208208 ★★

Incomum · Saberes

Point groups in two dimensions

Geometry concept

Texto em inglês

In geometry, a two-dimensional point group or rosette group is a group of geometric symmetries (isometries) that keep at least one point fixed in a plane. Every such group is a subgroup of the orthogonal group O(2), including O(2) itself.

Último preço

—

Preço mínimo

—

Mediana 7 d

—

Vendas 30 d

0

Faixa 30 d

—

Em circulação

0

Cotação

Ver tabela
Datamediana MínMáxvendas

Histórico de vendas

Última venda
—
Média 30 d
—
Mínima 30 d
—
Máxima 30 d
—
Vendas 7 d
0
Vendas 30 d
0

Ainda sem vendas.

Vendas anônimas: sem comprador nem vendedor. Os números contam só vendas entre jogadores.

Na Wikipédia

Texto em inglês Ainda não há artigo no seu idioma: trecho em inglês.

In geometry, a two-dimensional point group or rosette group is a group of geometric symmetries (isometries) that keep at least one point fixed in a plane. Every such group is a subgroup of the orthogonal group O(2), including O(2) itself. Its elements are rotations and reflections, and every such group containing only rotations is a subgroup of the special orthogonal group SO(2), including SO(2) itself. That group is isomorphic to R/Z and the first unitary group, U(1), a group also known as the circle group. The two-dimensional point groups are important as a basis for the axial three-dimensional point groups, with the addition of reflections in the axial coordinate. They are also important in symmetries of organisms, like starfish and jellyfish, and organism parts, like flowers.

Texto: Wikipédia em inglês, CC BY-SA 4.0. · Imagem: Designed by Tao Ho SVG code of 24 November 2005 version copi... (Public domain) ·

Cartas próximas

Ver a ficha

Confirmação