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Collection's Items (Sorted by Submit Date in Descending order): 21 to 40 of 131
Kaiser, Tomáš , Stehlík, Matěj
Edge-critical subgraphs of Schrijver graphs

For k≥1 and n≥2k, the Kneser graph KG(n,k) has all k-element subsets of an n-element set as vertices; two such subsets are adjacent if they are disjoint. It was first proved by Lovász that the chromatic number of KG(n,k) is n−2k+2. Schrijver constructed a vertex-critical ...

Bobkov, Vladimír , Drábek, Pavel , Yafdat, Ilyasov
Estimates on the spectral interval of validity of the anti-maximum principle

We investigate the interval of validity for anti-maximum principle for quasilinear operator involving the p-Laplacian.

Li, Binlong , Ozeki, Kenta , Ryjáček, Zdeněk , Vrána, Petr
Thomassen’s conjecture for line graphs of 3-hypergraphs

Drábek, Pavel , Langerová, Martina
On fourth-order boundary value problem with singular data

Lužar, Borut , Mockovčiaková, Martina , Ochem, Pascal , Pinlou, Alexandre , Soták, Roman
On non-repetitive sequences of arithmetic progressions:the cases k∈{4,5,6,7,8}

Drábek, Pavel , Robinson, Stephen B.
An extended variational characterization of the Fucik Spectrum for the p-Laplace operator

Cibulka, Radek , Fabian, Marián
On Nash-Moser-Ekeland Inverse Mapping Theorem

Šedivá, Blanka
The Using of Monte Carlo Simulation in the Teaching Process

Fencl, Martin
An influence of unilateral sources and sinks in reaction-diffusion systems exhibiting Turing's instability on bifurcation and pattern formation

Kardoš, František , Maceková, Mária , Mockovčiaková, Martina , Sopena, Éric , Soták, Roman
Incidence coloring - cold cases

Lužar, Borut , Mockovčiaková, Martina , Soták, Roman
Note on list star edge‐coloring of subcubic graphs

Cibulka, Radek , Preininger, Jakob , Roubal, Tomáš
On uniform regularity and strong regularity

We investigate uniform versions of (metric) regularity and strong (metric) regularity on compact subsets of Banach spaces, in particular, along continuous paths. These two properties turn out to play a key role in analyzing path-following schemes for tracking a solution trajectory of a&...

Bobkov, Vladimír , Drábek, Pavel , Ilyasov, Yavdat
On full Zakharov equation and its approximations

We study the solvability of the Zakharov equation in a bounded domain under homogeneous Dirichlet or Navier boundary conditions. This problem is a consequence of the system of equations derived by Zakharov to model the Langmuir collapse in plasma physics. Assumptions for the existe...

Bizzarri, Michal , Lávička, Miroslav , Vršek, Jan
Computing projective equivalences of special algebraic varieties

This paper is devoted to the investigation of selected situations when computing projective (and other) equivalences of algebraic varieties can be efficiently solved via finding projective equivalences of finite sets of points on the projective line. In particular, we design a method th...

Procházková, Petra , Roubalová, Radka , Dvořák, Jiří , Tlaskalová-Hogenová, Helena , Čermáková, Martina , Tomášová, Petra , Šedivá, Blanka , Kuzma, Marek , Bulant, Josef , Bilej, Martin , Hrabák, Pavel , Meisnerova, Eva , Lambertová, Alena , Papežová, Hana
Microbiota, Microbial Metabolites, and Barrier Function in A Patient with Anorexia Nervosa after Fecal Microbiota Transplantation

The change in the gut microbiome and microbial metabolites in a patient suffering from severe and enduring anorexia nervosa (AN) and diagnosed with small intestinal bacterial overgrowth syndrome (SIBO) was investigated. Microbial gut dysbiosis is associated with both AN and SIBO, and th...

Pospíšil, Jan , Sobotka, Tomáš , Ziegler, Philippe
Robustness and sensitivity analyses for stochastic volatility models under uncertain data structure

In this paper, we perform robustness and sensitivity analysis of several continuous-time stochastic volatility (SV) models with respect to the process of market calibration. The analyses should validate the hypothesis on importance of the jump part in the underlying model dynamics. Also ...

Aboomahigir, Elham , Nedela, Roman
Cubic Cayley Graphs of Girth at most 6 and Their Hamiltonicity

Thomassen's conjecture states that a cubic graph with sufficiently large cyclic connectivity is hamiltonian. Even the following strong conjecture could hold: A cyclically 7-connected cubic graph is hamiltonian, or it is the Coxeter graph. Assuming the conjecture holds true, to prove the&...

Hu, Kan , Nedela, Roman , Wang, NaEr
Complete regular dessins of odd prime power

A dessin is a 2-cell embedding of a connected 2-coloured bipartite graph into an orientable closed surface. A dessin is regular if its group of colour- and orientation-preserving automorphisms acts regularly on the edges. In this paper we employ group-theoretic method to determine ...

Hu, Kan , Nedela, Roman , Wang, N.-E. , Yuan, K.
Reciprocal skew morphisms of cyclic groups

Reciprocal pairs of skew morphisms of cyclic groups are in one-to-one correspondence with isomorphism classes of regular dessins with complete bipartite underlying graphs. In this paper we determine all reciprocal pairs of skew morphisms of the cyclic groups provided that one of them&#x...

Nedela, Roman , Pomerance, Carl
Density of singular pairs of integers

An ordered pair of integers (m,n) is called singular if g.c.d.(m,\phi(n))=1=g.c.d.(\phi(m),n), a concept which is relevant to pairwise products of cyclic groups. In this note we show that the number of singular pairs is asymptotic to z(x)^2, where z(x) is a function derived&#x...

Collection's Items (Sorted by Submit Date in Descending order): 21 to 40 of 131