In this section we study the Picard-Vessiot extensions of the differential systems (4.4) and (4.15), obtained for energy levels E=0 and E≠0 respectively. We denote the base differential field by Kr=C(x,tr) with constants field C.
We have been dealing with the dimension problem, even with certain levels of heterogeneity, for many years and we have some experience to face them. Nevertheless, big data has brought a series of new problems related to the very high number (and oft…
There aren't more papers