*注:全文英語の論文です!! Music of America, like Jazz, is made up of a so-called primitive spirit and natural search for beauty. African people and Native American people have feelings of thanks for god and nature and express it directly. Europeans tend to...
Chapter 1 Sturm’s Theorem 1.1 Sturm’s Thorem Definition 1.1 We define that the number of changed sign V (a1, · · · , an) for a = 1, · · · , an ∈ R is as follows. For the sequense (a1, · · ·...