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All about, but cannot be seen,...

All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. What is it?

Correct answers: 107

The first user who solved this task is Djordje Timotijevic.

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I live every day like it's the last day of my life

@kevin_nealon:

I live every day like it's the last day of my life.

Every morning I wake up real early, and I spend maybe three hours on the phone making funeral arrangements.

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Oskar Bolza

Born 12 May 1857; died 5 Jul 1942 at age 85.German mathematician who moved to the U.S. in 1888. He published The elliptic s-functions considered as a special case of the hyperelliptic s-functions in 1900. From 1910, he worked on the calculus of variations. Bolza wrote a classic textbook on the subject, Lectures on the Calculus of Variations (1904). He returned to Germany in 1910, where he researched function theory, integral equations and the calculus of variations. In 1913, he published a paper presenting a new type of variational problem now called "the problem of Bolza." The next year, he wrote about variations for an integral problem involving inequalities, which later become important in control theory. Bolza ceased his mathematical research work at the outbreak of WW I in 1914.«

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