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Article
On cellular-compact spaces
As it was introduced by Tkachuk and Wilson in [7], a topological space X is cellular-compact if for any cellular, i.e. disjoint, family \(\mathcal{U}\) U of non-empty open subsets of X there is a compact subs...
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Article
On the tightness of \({G_\delta}\) -modifications
The \({G_\delta}\) G δ ...
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Article
Contribution to the application of the langmuir probe technique for plasma monitoring in the Ar and n-hexane mixture plasma during the polymerisation process
In the present paper the Langmuir probe technique was applied for plasma monitoring in the Ar and n-hexane mixture plasma during the polymerisation process. The experiments were performed in a stainless steel ...
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Article
Some remarks on a problem of J. D. Monk
In this paper we give a partial answer to a question of J. D. Monk on the size of independent families in product of interval algebras and for some related questions.
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Article
On the number of non-isomorphic subgraphs
Let \(\mathcal{K}\) be the family of graphs on ω1 without cliques or independent subsets of sizew 1....
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Article
Fast degradation of fullerenes by ultraviolet laser radiation
The first observation of fullerene C60 ultraviolet photolysis in hexane solution was published two years ago [1]. Similar further experiments realized with an ultraviolet lamp and solar light gave inconsistent re...
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Article
Laser deposited YBaCuO thin films
YBa2Cu3O7-x thin films were deposited by laser ablation using KrF excimer laser. In deposition on polycrystalline ZrO2/(1−102) sapphire substrates influence of deposition conditions on film properties were studie...
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Article
Production of fullerenes by a near infrared laser
Preparation of macroscopic amount of C60 clusters (fullerenes) by the iodine laser is reported.
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Article
On c+-chromatic graphs with small bounded subgraphs
It is shown that if ZF is consistent then so is ZFC+2ω is as large as you wish + “there is a graph with cardinality and chromatic number (2ω) + such that every subgraph of cardinality ≤2ω has chromatic number ω”.
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Article
More on countably compact, locally countable spaces
Following [5], aT 3 spaceX is called good (splendid) if it is countably compact, locally countable (andω-fair).G(κ) (resp.S(κ)) denotes the statement that a good (resp. splendid) spaceX with |X|=κ