通过计算和证明一些经典二维赋范线性空间中具有对称性的双正交元的存在性,说明了在一般二维赋范线性空间中都存在具有对称性的双正交元.
This paper calculates and proves the existence of Birkhoff-Isosceles orthogonal vectors with symmetry in some classical two-dimensional normed linear spaces, then summaries that there are symmetrical Birkhoff-Isosceles orthogonal vectors in general two-dimensional normed linear spaces.