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 non-conjunction, or alternative denial, or NAND. In digital electronics, it corresponds to the NAND gate. It is named after Henry Maurice Sheffer and written as or as or as or as in Polish notation by Łukasiewicz.
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.
Colleen Zenk is an American actress. She is known for her role as Barbara Ryan in the CBS daytime soap opera, As the World Turns, a role she played from September 1978 until the show ended in September 2010. She received three Daytime Emmy Awards nominations for her performance.
Eric 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).
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, Joe Kane in the film The Program, and Keith Scott on the television series One Tree Hill.
Henry Maurice Sheffer was an American logician.
Mackenzie Browning is a fictional character from the CBS soap opera The Young and the Restless. The role was most recently portrayed by Kelly Kruger, who portrayed the role from February 19, 2002, to July 1, 2003, and from March 28, 2018, to January 11, 2019. Previously, the role was portrayed by Ashley Bashioum from 1999 to 2002 and 2004 to 2005, Nicole Tarantini temporarily in 2001, Rachel Kimsey from 2005 to 2006 and Clementine Ford from 2009 to 2010.
Joe Shelby "Josh" Griffith is an American soap opera writer and producer.
Cassie Newman is a fictional character from The Young and the Restless, an American soap opera on the CBS network. Portrayed by Camryn Grimes, the character was introduced on March 19, 1997, by William J. Bell as the biological daughter of Sharon Newman who had been adopted. Grace Turner, Sharon's best friend, tracked Cassie down in hopes of reuniting her with Sharon, but decided to keep the girl for herself. A year passed before Sharon learned Cassie was her daughter, regaining custody with her husband Nicholas Newman, who adopted her.
Daniel Sheffer was an American politician, physician, and judge who served a single term in the United States House of Representatives, representing the 12th congressional district of Pennsylvania from 1837 to 1839 as a Democrat in the 25th United States Congress.
Multiple Sarcasms is a 2010 American drama film starring Timothy Hutton, Mira Sorvino, Stockard Channing, Dana Delany 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 an Israeli former professional basketball player. He spent most of his club career playing with Maccabi Tel Aviv. During his playing career he played at the point guard and shooting guard positions. During his playing days, his nickname was "The Iceman".
Johann Friedrich Karl Asperger was an Austrian physician. Noted for his early studies on atypical neurology, specifically in children, he is the namesake of the former autism spectrum disorder Asperger syndrome. He wrote more than 300 publications on psychological disorders that posthumously acquired international renown in the 1980s. His diagnosis of autism, which he termed "autistic psychopathy", also garnered controversy. Further controversy arose during the late 2010s over allegations that Asperger referred children to a Nazi German clinic responsible for murdering disabled patients, although his knowledge and involvement remains unknown.
Iron Man 2 is an action-adventure video game loosely based on the 2010 movie 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 it was cancelled.
Shadow of Doubt is a 1998 American independent crime-mystery thriller and courtroom drama film directed by Randal Kleiser and starring Melanie Griffith, Tom Berenger, Craig Sheffer, and Huey Lewis.
In mathematical logic, minimal axioms for Boolean algebra are assumptions which are equivalent to the axioms of Boolean algebra, chosen to be as short as possible. For example, an axiom with six NAND operations and three variables is equivalent to Boolean algebra:
"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.
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.
