The sum of squares of degrees of bipartite graphsActa Mathematica Academiae Scientiarum Hungarica - Tập 171 - Trang 1-11 - 2023
M. G. Neubauer
Let G be a subgraph of the complete bipartite graph
$$K_{l,m},{l \leq m}$$
, with
$$e=qm+p>0$$
,
$$0 \leq p ... hiện toàn bộ
The Number of Compatible Totally Bounded Quasi-UniformitiesActa Mathematica Academiae Scientiarum Hungarica - Tập 88 - Trang 15-23 - 2000
H.-P. A. Künzi, M. J. Pérez-Peñalver
We prove that a topological space that admits a nontransitive totally bounded quasi-uniformity, admits at least
$$2^{2^{N_0 } } $$
nontransitive totally bounded quasi-uniformities. Furthermore we show that each infinite T
2-space admits at least
...... hiện toàn bộ
Inequalities for vector systemsActa Mathematica Academiae Scientiarum Hungarica - Tập 111 - Trang 9-28 - 2006
Mingbao Sun Sun, Xiaoping Yang Yang
For a vector system in E
n, we establish a class of inequalities for k-dimensional space angle (defined in this paper), and give some application thereof.
Some functional equations on standard operator algebrasActa Mathematica Academiae Scientiarum Hungarica - Tập 118 - Trang 299-306 - 2007
A. Fošner, J. Vukman
The main purpose of this paper is to prove the following result. Let H be a complex Hilbert space, let
$$
\mathcal{B}
$$
(H) be the algebra of all bounded linear operators on H, and let
$$
\mathcal{A}
$$
(H) ⊂
...... hiện toàn bộ