On the Connexion Between Legendre Series and Fourier Series

W. H. Young
1920 Proceedings of the London Mathematical Society  
We distinguish between a Legendre series and a series of Legendre coefficients. * The special case of the theorem dealing with the Legendre series of a function tviiose square is stcmmable had been proved by quite different methods, adapted ad hoc, by A. Haar
doi:10.1112/plms/s2-18.1.141 fatcat:36wsandbc5gzxmlzzqdr7572be