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Topic: Was Brahmagupta Misquoted? "Debt multiplied by debt equals fortune"
Replies: 1   Last Post: Oct 8, 2013 10:36 PM

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Jonathan J. Crabtree

Posts: 355
From: Melbourne Australia
Registered: 12/19/10
Was Brahmagupta Misquoted? "Debt multiplied by debt equals fortune"
Posted: Oct 7, 2013 11:01 PM
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Dear Friends

Many people quote Brahmagupta as saying 'debt multiplied by debt equals fortune'.

This is often in connection with -ve x -ve = +ve

I doubt Brahmagupta was that stupid!

Would you please help me locate verses 18.30-35 from the Brahmasphutasiddhanta and provide a trustworthy translation into English?

I have uploaded it to

NOTE: I have seen a translation by Colebrook, yet would prefer an expert run their eyes over the Sanskrit.

Thank you.

Yours sincerely,
Jonathan Crabtree
Mathematics Researcher
Melbourne Australia
(Currently over at

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