. "2234261"^^ . . "Nulov\u00FD vektor"@cs . . "34"^^ . "nulov\u00FDm prvkem"@cs . "nulov\u00FD"@cs . . "nulov\u00E9mu vektoru"@cs . "1"^^ . "nulov\u00FD vektor"@cs . "129249"^^ .