Who wrote the Anand math?

Answer 1

Bankim Chandra Chatterji (1838-94) wrote the "Anand Math."

Chatterji's last name is also rendered as Chattopadhyay [of which Chatterji is the Anglicised version; Chattopadhyay is the more authentic Bengali surname]. So don't be afraid if you see his last name rendered in at least two different ways. Also, be aware that Chatterji can also be spelled "Chatterjee."

On a side note, this question should not be in the "maths" category. I know his book is called the "Anandamath" but this refers to a sacred brotherhood, not mathematics. Finally, the "math" in "Anandamath" has a hard, aspirate "th" sound as in "paratha" (the famous Indian flatbread) or Maratha (the predominant ethnic group in Maharashtra).