Philosophical Transactions: Mathematical, Physical and Engineering Sciences, Vol. 377, No. 2140, Theme issue: The notion of ‘simple proof’ - Hilbert’s 24th problem (11 March 2019), pp. 1-11 (11 pages) ...
Georg Cantor's 1870 theorem that an everywhere convergent to zero trigonometric series has all its coefficients equal to zero is given a new proof. The new proof uses the first formal integral of the ...