For matroids M and N on disjoint sets S and T , a semidirect sum of M and N is any matroid K on S ∪ T that, like the direct sum and the free product, has the restrictionK|S equal toM and the contractionK/S equal toN . We abstract a matrix construction to get a general matroid construction: the matroid union of any rank-preserving extension ofM on the set S ∪ T with the direct sum ofN and the ra...

New corporate compliance regulations such as the Sarbanes Oxley (SOX) Act of 2002 contain requirements for the chief executive and financial officers to certify the effectiveness of internal controls and processes leading to financial reporting. An inevitable result of implementing compliance with these regulations is an increased focus on improving systems and greater interdependence between t...

Dept. of Pharmaceutics, St James College of Pharmaceutical sciences, Chalakudy, Kerala Dept. of Pharmaceutical analysis, St James College of Pharmaceutical sciences, Chalakudy, Kerala Dept. of Pharmaceutical Chemistry, St James College of Pharmaceutical sciences, Chalakudy, Kerala Dept. of Pharmacy Practice, St James College of Pharmaceutical sciences, Chalakudy, Kerala Dept. of Pharmaceutical ...