TY - JOUR
T1 - Matematické nástroje
A1 - Vrábel, Peter
JA - Obzory matematiky, fyziky a informatiky
Y1 - 2009
VL - 38
IS - 2
SP - 11
EP - 15
SN - 1335-4981
N2 - A semi-invariant is the quantity which is changed monotonically and gains only finite values. Semi-invariants are often used in the analysis of evolving systems to show that certain final configurations must occur. Every investigated object of a problem is assigned some value of quantity and is defined a suitable operation on the set of objects. We concentrate on the least"or the greatest value of semi-invariant and we the problem solve by its means.
ER -