IN a letter in NATURE (Jan. 20, 1921; vol. 106, p. 661) I took occasion to point out that the year of Ramanujan's birth was given in some notices as 1887 and in others as 1888. I wrote at the time ...

National mathematics day is celebrated every year in India on December 22 to honour the memory of mathematical genius Srinivasa Ramanujan. Ramanujan was born in Tamil Nadu’s Erode district on ...