"HU - Ma\u010Farsko" . . . . "Let A be a Banach algebra without unit with a regular norm. It is known that there are a minimal and a maximal extension of this norm to the unitization of A. It is shown that the best upper bound for the ratio of these two extensions is equal to 3." . "Norms on unitizations of Banach algebras revisited"@en . . . "114" . "Norms on unitizations of Banach algebras revisited"@en . "[C5307E2A441C]" . "regular norm; unitization"@en . "Normy v unit\u00E1ln\u00EDch roz\u0161\u00ED\u0159en\u00EDch Banachov\u00FDch algeber"@cs . . . "Norms on unitizations of Banach algebras revisited" . "Let A be a Banach algebra without unit with a regular norm. It is known that there are a minimal and a maximal extension of this norm to the unitization of A. It is shown that the best upper bound for the ratio of these two extensions is equal to 3."@en . . "P(GA201/03/0041), Z(AV0Z10190503)" . . . . "4"^^ . . . "RIV/67985840:_____/07:00096481" . . "Norms on unitizations of Banach algebras revisited" . "RIV/67985840:_____/07:00096481!RIV08-AV0-67985840" . "Arhippainen, J." . "1"^^ . "Nech\u0165 A je Banachova algebra bez jednotky s regul\u00E1rn\u00ED normou. Je zn\u00E1mo, \u017Ee existuje minim\u00E1ln\u00ED a maxim\u00E1ln\u00ED roz\u0161\u00ED\u0159en\u00ED t\u00E9to normy na unitizaci A. Je uk\u00E1z\u00E1no, \u017Ee nejlep\u0161\u00ED odhad pod\u00EDlu t\u011Bchto dvou norem je 3."@cs . "437595" . "M\u00FCller, Vladim\u00EDr" . "0236-5294" . . "201;204" . "Normy v unit\u00E1ln\u00EDch roz\u0161\u00ED\u0159en\u00EDch Banachov\u00FDch algeber"@cs . "2"^^ . "Acta Mathematica Hungarica" . "2" . .