Ahora bien, Friedman entiende que el surgimiento de la relatividad general no solo supuso el abandono de la geometria euclidiana y la adopcion de la variedad de Riemann
, sino que implico tambien un cambio en el caracter de la geometria, que paso de un estatus no empirico y convencional a uno empirico y no convencional.
's theorem shows the reason why Seeliger's paradox occurs, and it also demonstrates that its origin is mathematical, not physical.
Buser, Geometry and spectra of compact Riemann
surfaces, Progress in Mathematics, 106, Birkhauser Boston, Inc., Boston, MA, 1992.
The scalar constructed out of this projected Riemann
Shen  considered the Riemann
problem of pressureless Euler system (4).
It has been shown that delta-shocks and vacuum states do occur in the Riemann
solutions of (3).
Tenney withholds a filiation for the clang in Riemann
's Klang, which was translated into English as early as the 1890s (see Dictionary of Music, trans.
"The inspired idea of incorporating into the symphony a minuet in the form of a typical folksy medley of coarse revelry, the philistine affability and naive grace was also undoubtedly in compliance with the new spirit, which had been brought into orchestral music in the city on the Rhine and Neckar by the settled Bohemian [bohmisch], and Moravian, musicians Stamitz, Filtz and Richter." In a footnote, with reference to a work by Adolf Sandberg, Riemann
added yet another name--that of Jan Zach (whereas Filtz would be omitted from the group in the future).
Thus, the Riemann
tensors on the middle surface S are defined by (cf.
In 1859, on the occasion of being elected as a corresponding member of the Berlin Academy, Bernard Riemann
presented a lecture with the title On the Number of Primes Less Than a Given Magnitude, in which he presented a mathematics formula, derived from complex integration, which gave a precise count of the primes on the understanding that one of the terms in the formula, which depended on a knowledge of the non-trivial zeros of the zeta function, could be evaluated.
Among the topics are modular functions and Eisenstein series, the Riemann
zeta function, Euler's formulas and functional equations, functional equations, a linear space of solutions, and the multidimensional Poisson summation formula.
In 2013, Cheng  considered the Riemann
problem and two kinds of interactions of elementary waves for system (3) with the state equation for Chaplygin gas: