Stefan Lovgren for National Geographic News.

It is named for Hans Hahn and Stefan Banach who proved this theorem independently in the late 1920s, although a special case was proved earlier ( in 1912 ) by Eduard Helly, and a general extension theorem from which the Hahn – Banach theorem can be derived was proved in 1923 by Marcel Riesz.

The chorus and subsequent stanzas include heart-lifting examples of military heroes, set as role models for Polish soldiers: Jan Henryk Dąbrowski, Napoléon Bonaparte, Stefan Czarniecki and Tadeusz Kościuszko.

Stefan Czarniecki was a 17th-century hetman ( military commander ), famous for his role in driving the Swedish army out of Poland after an occupation that had left the country in ruins and is remembered by Poles as the Deluge.

After 1871 Masurians who expressed sympathy for Poland were deemed " national traitors " by German nationalists ( this increased especially after 1918 ) According to Stefan Berger after 1871 the Masurians in the German Empire were seen in a view that while acknowledging their " objective " Polishness ( in terms of culture and language ) they felt " subjectively " German and thus should be tightly integrated into German nation-state ; to Berger this argument went directly against the German nationalist demands in Alsace where Alsatians were declared German despite their " subjective " choice.

In training for that race, the late Stefan Bellof set the all-time lap record for the Nordschleife in his Porsche 956, which is still unbeaten at 6: 11. 13, or over on average ( partially because no major racing has taken place there since 1984 ).

Reformers like authors Stefan Heym and Christa Wolf and attorney Gregor Gysi, lawyer of dissidents like Robert Havemann and Rudolf Bahro, soon began to re-invent a party infamous for its rigid Marxist-Leninist orthodoxy and police-state methods.

Stefan spend the first few years of his life with his grandmother, but when she took ill Greczek arranged for his son to be raised by Franciszka Płowa and her niece Maria Puchalska in Kraków.

Before his return, Adorno had not only reached an agreement with a Tübingen publisher to print an expanded version of Philosophy of New Music, but completed two compositions: Four Songs for Voice and Piano by Stefan George, op. 7, and Three Choruses for Female Voices from the Poems of Theodor Daubler, op.

Frotz was originally written in C by Stefan Jokisch in 1995 for DOS.

Stefan de Vrij would be taking up the vacant spot for captain, considering his time and experiences with Feyenoord, making Jordy Clasie, who because of his good play and tenacity soon became one of the most popular players among the supporters, vice-captain.

In 1661 it was given to Stefan Czarniecki as a reward for his service in the victory over the Swedes during the Deluge.

In 1692, Stefan Mikołaj Branicki, the son of Jan Klemens Branicki ( Marshal of the Crown Court ), obtained city rights for Białystok from King John III Sobieski.

The argument for phimosis and a resulting operation is mostly seen to originate from Stefan Zweig.

The film presents Steinway's chief piano tuner and concert technician for the Vienna-area, Stefan Knüpfer, in his work with pianists such as Lang Lang, Alfred Brendel and Pierre-Laurent Aimard.

Stefan Knüpfer prepares the Steinway piano for him while Alfred Brendel gives his directions humorously.

She and other RAF members attempted to kidnap her children so that they could be sent to a camp for Palestinian orphans and educated there according to her desires ; however, the twins were intercepted in Sicily and returned to their father, in part due to the intervention of Stefan Aust.

In 1587, he was a candidate for the monarch of Polish – Lithuanian Commonwealth, following the death of previous Polish king, Stefan Batory.

* Morton Feldman: For Stefan Wolpe, for chorus and two vibraphones ( 1986 )

The value of the Stefan – Boltzmann constant is derivable as well as experimentally determinable ; see Stefan – Boltzmann law for details.

Nemanja's son Rastko ( Saint Sava ), gained autocephaly for the Serbian Church in 1217 and authored the oldest known constitution, and in the same year Stefan II was crowned King, establishing the Serbian Kingdom.

Villeneuve was close to signing with Stefan GP for the 2010 Formula One season, and undertook a seat fitting, but the FIA did not certify Stefan GP for competition in 2010.

Stefan Hell of the Max Planck Institute for Biophysical Chemistry was awarded the 10th German Future Prize in 2006 for his development of the STED microscope.

* Memoria – a joint program of Stefan Batory Foundation and German Foundation Remembrance, Responsibility and Future launched in 2007 to support international volunteers projects aimed to protect European cultural heritage in borderland regions of Central and Eastern Europe.

In his book, Brazil, A Land of the Future, Austrian writer Stefan Zweig describes the colorful character of Villegaignon:

In 1955, after being enchanted by the book Brazil: A Land of the Future by Stefan Zweig, Papassavas journeyed with his wife to Rio de Janeiro, Brazil where he studied under Candido Portinari.

* Die Letzte Droge ( 2006 ), directed by Stefan Kluge.

2000 Polish cavalry ( one regiment under the command of Aleksander Koniecpolski, supported by Jerzy Lubomirski, six pancerni cavalry companies of Jeremi Wiśniowiecki and Winged Hussars under the command of Stefan Czarniecki ) repulsed the Tatars, who suffered heavy losses.

* The King David Report, a fictional work by Stefan Heym

It also led to a mathematical formulation of the concept of entropy by Clausius and to the introduction of laws of radiant energy by Jožef Stefan.

In 1345, the Serbian King Stefan Uroš IV Dušan proclaimed himself Emperor ( Tsar ) and was crowned as such at Skopje on Easter 1346 by the newly created Patriarch of Serbia, and by the Patriarch of Bulgaria and the autocephalous Archbishop of Ohrid.

It was only employed by Stefan Uroš IV Dušan and his son Stefan Uroš V in Serbia ( until his death in 1371 ), after which it became extinct.

Hadamard also founded the modern school of linear functional analysis further developed by Riesz and the group of Polish mathematicians around Stefan Banach.

* Jeremiah ( play ) ( 1919 ), by Stefan Zweig

He took the name Radek from a favourite character, Andrej Radek, in Syzyfowe prace ( The Labor of Sisyphus ) by Stefan Żeromski.

By treating the star as an idealized energy radiator known as a black body, the luminosity L and radius R can be related to the effective temperature by the Stefan – Boltzmann law:

* A Problem Course in Mathematical Logic, by Stefan Bilaniuk, is another free textbook.

The blade element theory ( BET ) is a mathematical process originally designed by William Froude ( 1878 ), David W. Taylor ( 1893 ) and Stefan Drzewiecki to determine the behaviour of propellers.

One integrative, biopsychosocial approach to personality and psychopathology, linking brain and environmental factors to specific types of activity, is the hypostatic model of personality, created by Codrin Stefan Tapu.

Since Stefan Greczek was a private and was prevented by military regulations from marrying, and the mother was too poor to support the child, the couple decided that he should be reared by family and friends.

* The Dark Temple by Stefan E. Jones