semi-norm

英語（米国） (en-US) 英語（イギリス） (en-GB)

名詞

(mathematical analysis) A function denoted ∥v∥ that maps a vector v to a non-negative value such that ∥cv∥ = |c|.∥v∥, where c is a scalar, and ∥v + w∥ ≤ ∥v∥ + ∥w∥ (the triangle inequality); the condition that ∥v∥ = 0 implies that v = 0 is not required, but when it holds, the semi-norm is a norm.

日本語の意味

半ノルム: 数学解析における概念で、ベクトル v に対して非負の実数を割り当てる写像です。具体的には、任意のスカラー c について ∥cv∥ = |c|∥v∥ の性質と、三角不等式 ∥v + w∥ ≤ ∥v∥ + ∥w∥ を満たします。ただし、∥v∥ = 0 が必ずしも v = 0 を意味しないため、通常のノルムとの差異があります。

英語の意味

(mathematical analysis) A function denoted ∥v∥ that maps a vector v to a non-negative value such that ∥cv∥ = |c|.∥v∥, where c is a scalar, and ∥v + w∥ ≤ ∥v∥ + ∥w∥ (the triangle inequality); the condition that ∥v∥ = 0 implies that v = 0 is not required, but when it holds, the semi-norm is a norm.

このボタンはなに？

To prove convergence, she introduced a semi-norm on the space of functions that vanishes on a subspace while still satisfying positive homogeneity and the triangle inequality.

収束を証明するために、彼女は部分空間でゼロになる、ベクトル v を非負の値 ∥v∥ に写し、∥cv∥ = |c|∥v∥（正同次性）および三角不等式を満たす関数をその関数空間に導入した。

詳細

意味（1）

(mathematical analysis) A function denoted ∥v∥ that maps a vector v to a non-negative value such that ∥cv∥ = |c|.∥v∥, where c is a scalar, and ∥v + w∥ ≤ ∥v∥ + ∥w∥ (the triangle inequality); the condition that ∥v∥ = 0 implies that v = 0 is not required, but when it holds, the semi-norm is a norm.

semi-norms （ plural ）