Acta Mathematica Academiae Scientiarum Hungarica

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On theβ-expansions of real numbers
Acta Mathematica Academiae Scientiarum Hungarica - Tập 11 - Trang 401-416 - 1960
W. Parry
Interval filling sequences and completely additive functions
Acta Mathematica Academiae Scientiarum Hungarica - Tập 58 - Trang 229-240 - 1991
J. C. Parnami
On chromatic number of graphs and set-systems
Acta Mathematica Academiae Scientiarum Hungarica - Tập 17 - Trang 61-99 - 1966
P. Erdős, A. Hajnal
The sum of squares of degrees of bipartite graphs
Acta 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 $$e=qm+p>0$$ , $$0 \leq p ... hiện toàn bộ
The Number of Compatible Totally Bounded Quasi-Uniformities
Acta Mathematica Academiae Scientiarum Hungarica - Tập 88 - Trang 15-23 - 2000
H.-P. A. Künzi, M. J. Pérez-Peñalver
We prove that a topological space that admits a nontransitive totally bounded quasi-uniformity, admits at least $$2^{2^{N_0 } } $$ nontransitive totally bounded quasi-uniformities. Furthermore we show that each infinite T 2-space admits at least ...... hiện toàn bộ
Some functional equations on standard operator algebras
Acta Mathematica Academiae Scientiarum Hungarica - Tập 118 - Trang 299-306 - 2007
A. Fošner, J. Vukman
The main purpose of this paper is to prove the following result. Let H be a complex Hilbert space, let $$ \mathcal{B} $$ (H) be the algebra of all bounded linear operators on H, and let $$ \mathcal{A} $$ (H) ⊂ ...... hiện toàn bộ
Ideals inZ[x, y]
Acta Mathematica Academiae Scientiarum Hungarica - Tập 32 Số 1-2 - Trang 63-73 - 1978
Peter Trotter
Walsh series and measure
Acta Mathematica Academiae Scientiarum Hungarica - Tập 102 Số 3 - Trang 261-267 - 2004
Yoneda, Kaoru
Let ξ =(ξ0,ξ1,...) be a zero-one series. We shall study whether the Walsh series, $$\sum\limits_{n = 0}^\infty {\xi _n } w_n (x)$$ is the Walsh--Fourier series of some measure or not.
On fully decomposable abelian torsion groups
Acta Mathematica Academiae Scientiarum Hungarica - Tập 3 - Trang 225-232 - 1952
A. Kertész
Special forms and the distribution of practical numbers
Acta Mathematica Academiae Scientiarum Hungarica - Tập 160 - Trang 405-411 - 2019
X.-H. Wu
A positive integer n is called practical if every positive integer $$m \leq n$$ can be written as a sum of distinct divisors of n. For any integers $$a, b, k > 0$$, we show that if $$2 \nmid a$$, then there are infinitely many nonnegative integers m such that $$am^{k} + bm^{k-1}$$ is practical. Let qn denote the n-th practical number. Further, when $$n \geq 7$$, we prove that $$\sqrt{q_{n}+1} - \s...... hiện toàn bộ
Tổng số: 3,809   
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