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arXiv 2104.14484math.FA
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向量半内积

Vector semi-inner products

Kyle Rose, Christopher Schwanke, Zachary Ward

摘要:

我们形式化了向量半内积的概念,并引入了一类由这些映射构造的向量范数。将经典的勾股定理和平行四边形定律推广到余域具有几何平均闭向量格的向量范数。在这个余域是平方根闭的半素$f$ -代数的特殊情况下,我们给出了三角不等式的一个改进和一个等式成立的条件.

英文摘要:

We formalize the notion of vector semi-inner products and introduce a class of vector seminorms which are built from these maps. The classical Pythagorean theorem and parallelogram law are then generalized to vector seminorms that have a geometric mean closed vector lattice for codomain. In the special case that this codomain is a square root closed, semiprime $f$-algebra, we provide a sharpening of the triangle inequality as well as a condition for equality.

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