Abstract: We propose a Positivstellensatz for trigonometric polynomials that is simpler than ... consisting of checking the feasibility of a linear matrix inequality. The same result is used for a ...

Topics include inequalities and absolute value; compound angle formulas for trigonometric functions; limits and continuity using rigorous definitions; the derivative and derivative formulas (including ...

But, a new report from Oxfam International, published on the first day of the meeting in Davos, highlights how global inequality is more rampant than ever. The report, written by a team of policy ...

The public investigation and prosecution of corruption at such a scale occurred against the backdrop of widening inequality within China. This was not a mere coincidental correlation. Inequality in ...

In 1974, the libertarian political philosopher Robert Nozick famously defended inequality by offering a thought experiment involving Wilt Chamberlain. Imagine you lived in a society, he proposed ...

Trigonometry is the branch of mathematics that explains the relationship between sides and angles of a triangle. In a right angled triangle the three sides are perpendicular, base and hypotenuse ...

In fact, there have been hundreds of proofs of the Pythagoras’ groundbreaking theorem, but almost none of them—if not none at all—have independently proved it using trigonometry. That’s ...

Two high school seniors have presented their proof of the Pythagorean theorem using trigonometry — which mathematicians thought to be impossible — at an American Mathematical Society meeting.

Global inequality stems not just from what people have and don’t have—but what they're able to do with what they have. “The levels of inequality are horrendous," said Janet Fuentes, an activist from ...