Dweezil Zappa (born September 5, 1969) is an American rock guitarist and occasional actor. He is the son of musician Frank Zappa. == Early life == Zappa was born in Los Angeles, California, the son of musician Frank Zappa and Gail Zappa, who worked in business. He is the second of four siblings: his older sister, Moon, younger sister Diva and younger brother Ahmet. He is the cousin of actress Lala Sloatman. Zappa's father was of Sicilian, Greek, Arab, and French descent, and his mother was of French, Irish and mostly Danish ancestry. Dweezil's registered birth name was Ian Donald Calvin Euclid...

The Kempner series is a modification of the harmonic series, formed by omitting all terms whose denominator expressed in base 10 contains a 9 digit. That is, it is the sum where the prime indicates that n takes only values whose decimal expansion has no 9s. The series was first studied by A. J. Kempner in 1914. The series is interesting because of the counter-intuitive result that, unlike the harmonic series, the Kempner series converges (Kempner showed this value was less than 80 and Baillie showed that to 20 decimals, the actual sum is 22.92067 66192 64150 34816 (sequence A082838 in OEIS))....

In calculus, the squeeze theorem (known also as the pinching theorem, the sandwich theorem, the sandwich rule and sometimes the squeeze lemma) is a theorem regarding the limit of a function. The squeeze theorem is a technical result that is very important in proofs in calculus and mathematical analysis. It is typically used to confirm the limit of a function via comparison with two other functions whose limits are known or easily computed. It was first used geometrically by the mathematicians Archimedes and Eudoxus in an effort to compute π, and was formulated in modern terms by Gauss. In Italy...