Amartya Sen used these maths textbooks at school. They are in Hindi, even though this is not the most common language in West Bengal, where he grew up. Mathematics is important in economics, a field where Sen conducted groundbreaking studies.
Amartya Sen donated the textbooks to the Nobel Prize Museum in 2001.
A bicycle is not the most commonly-used tool in economic science, but Amartya Sen's bicycle has had a special significance in his research. A large part of his work is concerned improving conditions for the most impoverished members of society. In a study on differences between infant girls and boys, he employed an assistant to weigh the children. Problems arose when the children did not want to be weighed and bit the assistant. The episode ended with Amartya Sen bicycling through the countryside of West Bengal to weigh the infants himself.
Amartya Sen donated the calligraphy to the Nobel Prize Museum in 2001.
