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Autor: Dydak, J., Virk, Z.

Publikováno v: Glasnik Matematicki 46(2011), no.2

Extending a theorem of Shelah we prove that fundamental groups of Peano continua (locally connected and connected metric compact spaces) are finitely presented if they are countable. The proof uses ideas from geometric group theory.
Comment: 6 p

Externí odkaz: http://arxiv.org/abs/0903.3154

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Compact maps and quasi-finite complexes

Autor: Cencelj, M., Dydak, J., Smrekar, J., Vavpetic, A., Virk, Z.

Publikováno v: Topology and its Applications, 154 (2007) 3005-3020

The simplest condition characterizing quasi-finite CW complexes $K$ is the implication $X\tau_h K\implies \beta(X)\tau K$ for all paracompact spaces $X$. Here are the main results of the paper: Theorem: If $\{K_s\}_{s\in S}$ is a family of pointed qu

Externí odkaz: http://arxiv.org/abs/math/0608748

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Algebraic properties of quasi-finite complexes

Autor: Cencelj, M., Dydak, J., Smrekar, J., Vavpetic, A., Virk, Z.

Publikováno v: Fund. Math. 197 (2007), 67-80

A countable CW complex $K$ is quasi-finite (as defined by A.Karasev) if for every finite subcomplex $M$ of $K$ there is a finite subcomplex $e(M)$ such that any map $f:A\to M$, where $A$ is closed in a separable metric space $X$ satisfying $X\tau K$,

Externí odkaz: http://arxiv.org/abs/math/0509582

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A modelling approach for evaluating impacts of hydropeaking in a sub-arctic river

Autor: Virk, Z. (Zeeshan)

The release of pulses of water to increase hydroelectric power production at hydropower dams to meet daily peaks in electricity demands is called hydropeaking. Due to energy supply and demand fluctuations, the energy markets direct hydropower compani

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2423::dfbb12ed2c3feb5003c1bc80a21ead8b
http://jultika.oulu.fi/Record/nbnfioulu-202210123485

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