Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Richard_Schroeppel> ?p ?o. }
Showing items 1 to 72 of
72
with 100 items per page.
- Richard_Schroeppel abstract "Richard C. Schroeppel (born 1948) is an American mathematician born in Illinois. His research has included magic squares, elliptic curves, and cryptography. In 1964, Schroeppel won first place in the United States among over 225,000 high school students in the Annual High School Mathematics Examination, a contest sponsored by the Mathematical Association of America and the Society of Actuaries. In both 1966 and 1967, Schroeppel scored among the top 5 in the U.S. in the William Lowell Putnam mathematics competition. In 1973 he discovered the number of 5x5 normal magic squares, in 1998–1999 he designed the Hasty Pudding Cipher which was a candidate for the Advanced Encryption Standard, and he is one of the designers of the SANDstorm hash, a submission to the NIST SHA-3 competition.Among other contributions, Schroeppel was the first to recognize the sub-exponential running time of certain factoring algorithms. While not entirely rigorous, his proof that Morrison and Brillhart's continued fraction factoring algorithm ran in roughly steps was an important milestone in factoring and laid a foundation for much later work, including the current "champion" factoring algorithm, the Number Field Sieve. Not only did Schroeppel analyze Morrison and Brillhart's algorithm, he also saw how to cut the run time to roughly by modifications which allowed sieving. This improvement doubled the size of numbers which could be factored in a given amount of time. Coming around the time of the RSA algorithm, which depends on the difficulty of factoring for its security, this was a critically important result. Due to Schroeppel's apparent prejudice against publishing (though he freely circulated his ideas within the research community), and in spite of Pomerance noting that his quadratic sieve factoring algorithm owed a debt to Schroeppel's earlier work, the latter's contribution is often overlooked. (See the section on "Smooth Numbers" on pages 1476-1477 of Pomerance's "A Tale of Two Sieves," Notices of the AMS, Vol. 43, No. 12, December 1996.)His Erdős number is 2.".
- Richard_Schroeppel birthDate "1948".
- Richard_Schroeppel birthYear "1948".
- Richard_Schroeppel thumbnail Richard_Schroeppel_2004.jpg?width=300.
- Richard_Schroeppel wikiPageExternalLink richard.schroeppel.name:8015.
- Richard_Schroeppel wikiPageExternalLink Schroeppel.htm.
- Richard_Schroeppel wikiPageID "1649527".
- Richard_Schroeppel wikiPageRevisionID "543970040".
- Richard_Schroeppel dateOfBirth "1948".
- Richard_Schroeppel hasPhotoCollection Richard_Schroeppel.
- Richard_Schroeppel name "Schroeppel, Richard".
- Richard_Schroeppel shortDescription "American cryptographer".
- Richard_Schroeppel description "American cryptographer".
- Richard_Schroeppel description "American cryptographer".
- Richard_Schroeppel subject Category:1948_births.
- Richard_Schroeppel subject Category:20th-century_mathematicians.
- Richard_Schroeppel subject Category:21st-century_mathematicians.
- Richard_Schroeppel subject Category:American_cryptographers.
- Richard_Schroeppel subject Category:American_mathematicians.
- Richard_Schroeppel subject Category:Living_people.
- Richard_Schroeppel subject Category:Magic_squares.
- Richard_Schroeppel subject Category:Massachusetts_Institute_of_Technology_alumni.
- Richard_Schroeppel subject Category:Modern_cryptographers.
- Richard_Schroeppel subject Category:Putnam_Fellows.
- Richard_Schroeppel type 20th-centuryMathematicians.
- Richard_Schroeppel type 21st-centuryMathematicians.
- Richard_Schroeppel type AmericanCryptographers.
- Richard_Schroeppel type AmericanMathematicians.
- Richard_Schroeppel type Associate109816771.
- Richard_Schroeppel type CausalAgent100007347.
- Richard_Schroeppel type Colleague109935990.
- Richard_Schroeppel type Cryptanalyst109981540.
- Richard_Schroeppel type Decoder109995398.
- Richard_Schroeppel type Intellectual109621545.
- Richard_Schroeppel type LivingPeople.
- Richard_Schroeppel type LivingThing100004258.
- Richard_Schroeppel type Mathematician110301261.
- Richard_Schroeppel type ModernCryptographers.
- Richard_Schroeppel type Object100002684.
- Richard_Schroeppel type Organism100004475.
- Richard_Schroeppel type Peer109626238.
- Richard_Schroeppel type Person100007846.
- Richard_Schroeppel type PhysicalEntity100001930.
- Richard_Schroeppel type PutnamFellows.
- Richard_Schroeppel type Scientist110560637.
- Richard_Schroeppel type Whole100003553.
- Richard_Schroeppel type YagoLegalActor.
- Richard_Schroeppel type YagoLegalActorGeo.
- Richard_Schroeppel type Agent.
- Richard_Schroeppel type Person.
- Richard_Schroeppel type Person.
- Richard_Schroeppel type Q215627.
- Richard_Schroeppel type Q5.
- Richard_Schroeppel type Agent.
- Richard_Schroeppel type NaturalPerson.
- Richard_Schroeppel type Thing.
- Richard_Schroeppel type Person.
- Richard_Schroeppel comment "Richard C. Schroeppel (born 1948) is an American mathematician born in Illinois. His research has included magic squares, elliptic curves, and cryptography. In 1964, Schroeppel won first place in the United States among over 225,000 high school students in the Annual High School Mathematics Examination, a contest sponsored by the Mathematical Association of America and the Society of Actuaries. In both 1966 and 1967, Schroeppel scored among the top 5 in the U.S.".
- Richard_Schroeppel label "Richard Schroeppel".
- Richard_Schroeppel label "Richard Schroeppel".
- Richard_Schroeppel sameAs Richard_Schroeppel.
- Richard_Schroeppel sameAs m.05kldx.
- Richard_Schroeppel sameAs Q2150561.
- Richard_Schroeppel sameAs Q2150561.
- Richard_Schroeppel sameAs Richard_Schroeppel.
- Richard_Schroeppel wasDerivedFrom Richard_Schroeppel?oldid=543970040.
- Richard_Schroeppel depiction Richard_Schroeppel_2004.jpg.
- Richard_Schroeppel givenName "Richard".
- Richard_Schroeppel isPrimaryTopicOf Richard_Schroeppel.
- Richard_Schroeppel name "Richard Schroeppel".
- Richard_Schroeppel name "Schroeppel, Richard".
- Richard_Schroeppel surname "Schroeppel".