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321 373 (0,471s)

Result

Zig-zag-matrix algebras and solvable quasi-Hermitian quantum models

solvable M-level bound-state models with arbitrary M <=infinity are rare. A new class of such models is proposed here, therefore. Its exact algebraic solvability (involving., just (2M-1)- paramet...

Pure mathematics

  • 2023
  • Jimp
  • Link
Result

A Note on Sign-Nonsingular Matrices

We use previous results on complementary basic matrices to introduce a rather wide class of sign-nonsingular matrices.

BA - Obecná matematika

  • 2005
  • Jx
Result

Two Results on Basic Oscillatory Matrices

tridiagonal matrix, is extended to the class of basic oscillatory matrices introduced recently. Then it is shown that every oscillatory matrix contains a basic oscillatory matrix as a factor. This explains the rol...

BA - Obecná matematika

  • 2004
  • Jx
Result

Investigation of zig-zag type of interfacial instabilities in coextrusion

the interface and related for the onset of zig-zag type of interfacial instabilitiesModified Leonov model has been used for the viscoelastic stress calculation in the flat multi-manifold coextrusion die used for LDPE film ...

CD - Makromolekulární chemie

  • 2005
  • D
Result

Zig Zag calc

Software enables coil passive filter calculation with pointed winding. The model allows simulation of the symmetric and non-symmetrical power supply (with the contents of the 3rd harmonic voltage) and for different winding up....

JE - Nejaderná energetika, spotřeba a užití energie

  • 2008
  • R
Result

Electronic properties of single and double wall carbon nanotubes

wall zig-zag and armchair nanotubes. The electronic states of finite length zig of the electronic spectra caused by the different geometry of the zig-zag and armchair nanotubes for the electroni...

BE - Teoretická fyzika

  • 2012
  • C
Result

Zig-zag arrangement of four electrodes for ac electro-osmotic micropumps

This paper deals with the mathematical modeling of traveling-wave ac electro-osmotic micropumps with a zig-zag arrangement of microelectrodes. A mathematical model arrays, and the signal frequency. Performance of t...

CI - Průmyslová chemie a chemické inženýrství

  • 2011
  • Jx
  • Link
Result

Viscoelastic Coextrusion Flow Modeling by Advanced Constitutive Equations: The Influence of the Die Design on Interfacial Instabilities

Modified Leonov model has been utilized as a constitutive equation in modeling of the coextrusion in flat multi-manifold dies. It has been revealed that the zig-zag type of the interfacial instabilities can be rela...

CD - Makromolekulární chemie

  • 2005
  • D
Result

Complementary Basic Matrices

We show that an n x n matrix which has both subdiagonal and superdiagonal rank) completely between the subdiagonal and superdiagonal part, then this matrix can be factorized into a product of n-1 matrices,...

BA - Obecná matematika

  • 2004
  • Jx
Result

Mistakes and errors at the cowsheds´reconstructions: Conflict of opinions of changeable "zig-zag" cubicles.,

A compendium of mistakes at the stanchion stables´reconstructions. Appropriate housing parameters. Source materials for designing.

GG - Chov hospodářských zvířat

  • 2001
  • Jx
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