In Boolean functions and propositional calculus, the Sheffer stroke denotes a logical operation that is equivalent to the negation of the conjunction operation, expressed in ordinary language as "not both". It is also called nand or the alternative denial, since it says in effect that at least one of its operands is false. In digital electronics, it corresponds to the NAND gate. It is named after Henry M. Sheffer and written as ↑ or as |. In Bocheński notation it can be written as Dpq.
In mathematics, a Sheffer sequence or poweroid is a polynomial sequence, i.e., a sequence {pn(x) : n = 0, 1, 2, 3, ... } of polynomials in which the index of each polynomial equals its degree, satisfying conditions related to the umbral calculus in combinatorics. They are named for Isador M. Sheffer.
Steven Ralph Schirripa is an American actor, producer, author, and voice artist. He is best known for portraying Bobby Baccalieri on The Sopranos and Detective Anthony Abetemarco on Blue Bloods. Schirripa is a producer and host of two Investigation Discovery series: Karma's A B*tch! and Nothing Personal. He was a regular cast member of The Secret Life of the American Teenager and the voice of Roberto in the Open Season series. Schirripa has also appeared in commercials for Lamisil, Dick's Sporting Goods, and McDonald's.
Some Kind of Wonderful is a 1987 American romantic drama film directed by Howard Deutch and starring Eric Stoltz, Mary Stuart Masterson, and Lea Thompson. It is one of several successful teen dramas written by John Hughes in the 1980s.
Eric Randolph Close is an American actor, best known for his roles in television series, particularly as FBI agent Martin Fitzgerald in the CBS mystery drama Without a Trace (2002–2009) and Teddy Conrad in the ABC musical drama Nashville (2012–2017).
Dave's World is an American sitcom television series created by Fred Barron, that aired on CBS from September 20, 1993 to June 20, 1997. The series is based on the writing of Miami Herald columnist Dave Barry.
Hogan Sheffer was an American screenwriter.
Craig Eric Sheffer is an American film and television actor. He is known for his leading roles as Norman Maclean in the film A River Runs Through It, Aaron Boone in the film Nightbreed, and Keith Scott on the television series One Tree Hill.
Henry Maurice Sheffer was an American logician.
Joe Shelby "Josh" Griffith is an American soap opera writer and producer.
Daniel Sheffer was a Democratic member of the U.S. House of Representatives from Pennsylvania.
Multiple Sarcasms is a 2010 American drama film starring Timothy Hutton, Mira Sorvino, Stockard Channing, Dana Delany, Chris Sarandon and Mario Van Peebles. It was sold at the European Film Market on February 6, 2009 and was released in the United States May 7, 2010.
Christopher Robert "Chris" Hughes II M.D. is a fictional character from the CBS soap opera As the World Turns. The role was most notably portrayed by Bailey Chase from 2003 to 2005, Dylan Bruce from 2007 to 2008 and two-time Emmy nominee Daniel Cosgrove in 2010.
Doron Sheffer, is a retired Israeli professional basketball player. He spent most of his club career playing with Maccabi Tel Aviv. During his playing career, at a height of 1.96 m (6'5") tall, he played at the point guard and shooting guard positions. During his playing days, his nickname was "The Iceman".
Iron Man 2 is an action-adventure video game loosely based on the film of the same name. It was released in Europe on April 30, 2010, and in North America on May 4 for Xbox 360, Nintendo DS, Wii, PlayStation 3, and PlayStation Portable. Published by Sega, the game was developed by Sega Studios San Francisco for PlayStation 3 and Xbox 360, Griptonite Games for Nintendo DS, High Voltage Software for Wii and PlayStation Portable, and by Gameloft for iOS and BlackBerry PlayBook. A Microsoft Windows version was planned, but was cancelled.
Shadow of Doubt is a 1998 American independent mystery-thriller film directed by Randal Kleiser and starring Melanie Griffith, Tom Berenger, Craig Sheffer, and Huey Lewis.
"Broken Home" is the ninth and final episode of the first season of the American medical drama Body of Proof. It was originally broadcast in the United States on ABC on 17 May 2011. The episode was directed by Nelson McCormick and written by Andrew Dettman.
The Mark is a 2012 Christian film about the Rapture, directed by James Chankin and starring Craig Sheffer.
Rukwatita is a genus of titanosaur sauropod dinosaur from the Galula Formation in Tanzania. It lived around 100 million years ago, during the middle Cretaceous. The species, which shared features with another southern African species, Malawisaurus dixeyi, measured 30 feet (9.1 m) from the head to the tip of the tail, and had forelimbs that were estimated around 6.5 feet (2.0 m) long. Its fossils were found embedded in a cliff face near Lake Rukwa in the Rukwa Valley, from which it gets its name.
Code of Honor is a 2016 American action thriller film written, produced, edited, and directed by Michael Winnick. The film stars Steven Seagal and Craig Sheffer and was released to video on demand on May 6, 2016.
