21. Even in a portamento the extremal notes are typically identifiable, but not so here. 22. Thus we can speak about reflective hull, epireflective hull, extremal epireflective hull, etc. 23. The set of all connected components in the sequence is the set of all extremal regions. 24. He has published extensively in combinatorics and adjacent fields and specializes in extremal and probabilistic combinatorics. 25. It follows from Krein Milman theorem that the extremal states are the Dirac point-mass measures. 26. In supersymmetric theories, extremal black holes are often supersymmetric : they are invariant under several supercharges. 27. In supersymmetric theories, near-extremal black holes are often small perturbations of supersymmetric black holes. 28. Considered a compactification similar to the Thurston compactification, but using extremal length rather than hyperbolic length. 29. In 1922, Fekete published a paper together with von Neumann in the subject of extremal polynomials. 30. Extremal graph theory started in 1941 when Tur�n proved his result a vital tool in attacking extremal problems.
