* Rewald, John, ed., with the assistance of Lucien Pissarro: Camille Pissarro, Lettres à son fils Lucien, Editions Albin Michel, Paris 1950 ; previously published, translated to English: Camille Pissarro, Letters to his son Lucien, New York 1943 & London 1944 ; 3rd revised edition, Paul P Appel Publishers, 1972 ISBN 0-911858-22-9

See also the description of the operation of the process in Appel et al., published U. S. patent application US 2004 / 0192980, publication date September 30, 2004 .</ ref > the feedstock material is first ground into small chunks, and mixed with water if it is especially dry.

At the time, he was working as an actor on NBC ’ s sitcom “ Teachers .” His acting resume already included film and television roles in Trey Parker ’ s and Matt Stone ’ s motion picture, Team America: World Police, Andy Richter Controls the Universe, Richard Appel ’ s A. U. S. A., and Judd Apatow ’ s North Hollywood.

* Berkin, Carol R., Judith L. Pinch, and Carole S. Appel, Exploring Women's Studies: Looking Forward, Looking Back, 2005, ISBN 0-13-185088-1

In 2004, she recorded a duet with Swedish singer Adam Appel, " Ready For Love ," that was featured in the soundtrack to the 2004 Swedish documentary film Kärlekens Språk ( The Language of Love ).

In rejecting a " culture of life ," which he compares to the Inquisition and the Crusades, Appel wrote, " In matters as intimate as reproduction and death, history favors freedom over the power of church and state.

Some noted that Björk was distant from the " pixie " image of the first album, with Jen Appel praising the singer's attitude by saying: " With lyrics such as " If you complain once more / you'll meet an army of me ," Björk instantly proves she is a force to be reckoned with ".

Dr. Herbert Appel, National Prize of Science ( Organic Chemistry ) 1970.

" Others were Benjamin Appel, Bruno Fischer, David Goodis, Day Keene, Dan J. Marlowe, Wade Miller, Jim Thompson, Lionel White and Harry Whittington.

The 1950s and 1960s brought more college expansion and construction to the campus including: North Museum ( 1953 ), Marshall-Buchanan Residence Hall ( 1956 ), Appel Infirmary ( 1959 ), Schnader Residence Hall ( 1959 ), Mayser Physical Education Center ( 1962 ), Benjamin Franklin Residence Halls ( 1964 ), Pfeiffer Science Complex ( now Hackman Physical Science Laboratory ) ( 1967 ), Grundy Observatory ( 1967 ), Whitely Psychology Laboratory ( 1968 ) and Thomas Residence Hall ( 1968 ).

* 1921 – Karel Appel, Dutch painter ( d. 2006 )

* Appel, J. M. Is all fair in biological warfare?

Kenneth Appel and Wolfgang Haken finally proved this in 1976.

The four color theorem was proven in 1976 by Kenneth Appel and Wolfgang Haken.

Appel and Haken's approach started by showing that there is a particular set of 1, 936 maps, each of which cannot be part of a smallest-sized counterexample to the four color theorem.

Appel and Haken used a special-purpose computer program to confirm that each of these maps had this property.

Appel and Haken concluded that no smallest counterexamples existed because any must contain, yet not contain, one of these 1, 936 maps.

To dispel remaining doubt about the Appel – Haken proof, a simpler proof using the same ideas and still relying on computers was published in 1997 by Robertson, Sanders, Seymour, and Thomas.

In 1976, while other teams of mathematicians were racing to complete proofs, Kenneth Appel and Wolfgang Haken at the University of Illinois announced that they had proven the theorem.

Using mathematical rules and procedures based on properties of reducible configurations, Appel and Haken found an unavoidable set of reducible configurations, thus proving that a minimal counterexample to the four-color conjecture could not exist.

Appel and Haken's announcement was widely reported by the news media around the world, and the math department at the University of Illinois used a postmark stating " Four colors suffice.

Ulrich Schmidt at RWTH Aachen examined Appel and Haken's proof for his master's thesis.

In 1986, Appel and Haken were asked by the editor of Mathematical Intelligencer to write an article addressing the rumors of flaws in their proof.

In 1996, Neil Robertson, Daniel P. Sanders, Paul Seymour, and Robin Thomas created a quadratic time algorithm, improving on a quartic algorithm based on Appel and Haken ’ s proof (; ).

This new proof is similar to Appel and Haken's but more efficient because it reduced the complexity of the problem and required checking only 633 reducible configurations.

The following discussion is a summary based on the introduction to Appel and Haken's book Every Planar Map is Four Colorable.

Appel and Haken's final discharging procedure was extremely complex and, together with a description of the resulting unavoidable configuration set, filled a 400-page volume, but the configurations it generated could be checked mechanically to be reducible.

At first, The New York Times refused as a matter of policy to report on the Appel – Haken proof, fearing that the proof would be shown false like the ones before it.

* 1973 – Jacob M. Appel, American bioethicist

A computer-aided proof produced in 1976 by Kenneth Appel and Wolfgang Haken makes fundamental use of the notion of " discharging " developed by Heesch.

The first ray casting ( versus ray tracing ) algorithm used for rendering was presented by Arthur Appel in 1968.

Thus, French philosophers Félix Guattari and Gilles Deleuze signed in November 1977 L ' Appel des intellectuels français contre la répression en Italie ( The Call of French Intellectuals Against Repression in Italy ) in protest against Negri's imprisonment and Italian anti-terrorism legislation.

* " Civilisation 2. 0 " ( 2007 ), ISBN 87-413-6534-8, Thaning & Appel

* H. Krauss, A. Weber, M. Appel, B. Enders, A. v. Graevenitz, H. D. Isenberg, H. G. Schiefer, W. Slenczka, H. Zahner: Zoonoses.

* 1945 – Allen Appel, American novelist

* April 25 – Karel Appel, Dutch painter ( died 2006 )

* The Call of the Blood ( L ' Appel du Sang ) – 1920

* Benjamin Appel ( 1907 – 77 ), crime novelist.

* Appel, Jacob M. " The Monster's Law ", Genewatch, Volume 19, Number 2, March – April 2007.

* May 28 – Bruce Springsteen and Mike Appel reach an out-of-court settlement, ending the year-long legal battle that has blocked Springsteen's ability to record new music.

* Benjamin Appel ( 1907 – 1977 ), crime novelist.

#" I Can Feel Your Heartbeat " ( Appel, Cretecos, Farrell ) – 2: 05

#" Doesn't Somebody Want to Be Wanted " ( Appel, Cretecos, Farrell ) – 2: 46

* Mike Appel – background vocals

Christiaan Karel Appel ( 25 April 1921 – 3 May 2006 ) was a Dutch painter, sculptor, and poet.

* Johann von Appel ( 1826 – 1906 ), Austrian governor of Bosnia and Herzegovina

* Karel Appel ( 1921 – 2006 ), Dutch painter

* Paul Émile Appel ( 1855 – 1930 ), French mathematician

* Libby Appel ( 1996 – 2007 )

Johann Freiherr von Appel ( also Baron Johann von Appel ), ( 1826 – 1906 ) was an Austrian administrator.

* Karel Appel ( 1921-2006 ) – Cobra group

* Jacob Christian Lindberg Appel ( 1866 – 1931 ) 5 May 1920 – 23 April 1924

* Katrine Klinken, Smørrebrød – Danish open, Thaning & Appel, 2008.