A matroid on a set E is a family I of subsets of E (called independent sets) with the properties • a subset of an independent set is independent; • if A and B are independent with |A| < |B|, then there exists x ∈ B \A such that A∪{x} is independent. The rank ρ(A) of a subset A of E is the common size of maximal independent subsets of A. Examples of matroids: • E is a family of vectors in a vect...

We investigate the possibility of detecting solar antineutrinos with the KamLAND experiment. These antineutrinos are predicted by spin-flavor oscillations at a significant rate even if this mechanism is not the leading solution to the SNP. The recent evidence from SNO shows that the solar neutrino flux arriving on earth could contain a residual component including sterile neutrinos and/or the a...

The purpose of this study was to describe the achievement mathematical modeling competencies students with field-independent and field-dependent cognitive styles. type research used a mixed method involving 65 SMP N 7 Muaro Jambi students. data obtained through GETF style test, problem-solving interviews. results showed that FI had reached level 6 in competence, namely, performing entire proces...