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Just a layman and slow learner. Thank you for your enlightenment and patience, and for giving me the best memory in my life.


Jul
19
asked Are axioms assumed to be true in a formal system?
Jul
19
asked Is a definition either intensional or extensional?
Jul
15
asked Are there formal systems that are not logical systems?
Jul
15
asked What do “completely described” and “complete formalisation” mean?
Jul
6
asked Must the weight function be nonnegative for the greedy algorithm to be optimal for both a matroid and a greedoid?
Jul
4
asked Meaning of the characteristic polynomial of a matroid
Jul
4
asked What are a geometric system and a finite geometry?
Jul
3
asked Is the determinant of a matrix some kind of “integral” of the linear mapping?
Jul
3
asked Matrices with the same characteristic polynomial
Jun
30
asked Equivalent definitions for a coloop?
Jun
30
asked How do the dependent sets of a matroid characterize the matroid?
Jun
27
asked What kind of set system is defined to have this property?
Jun
26
asked Do the following properties characterize the set membership?
Jun
24
asked A set system generated by a closure operator?
Jun
24
asked what does “modular” mean?
Jun
24
asked What does “modular” in “modulr functions” mean?
Jun
22
asked Two definitions of matroid
Jun
21
asked Rank feasible subset of a greedoid
Jun
19
asked Name for the type of relation similar to the edge set of a regular directed graph?
Jun
16
asked If a k-regular graph is 1-factorable, then does it have chromatic index k?