7 65×25mm Borchardt - meaning and definition. What is 7 65×25mm Borchardt
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What (who) is 7 65×25mm Borchardt - definition

GERMAN MATHEMATICIAN
Karl Borchardt; Carl Borchardt; Karl Wilhelm Borchardt

7.65×25mm Borchardt         
PISTOL CARTRIDGE DESIGNED BY HUGO BORCHARDT
7.65 x 25 mm Borchardt; 7.65 mm Borchardt; 7.65x25mm Borchardt; 7.65×25 mm Borchardt; .30 Borchardt; 7.65×25mm
The 7.65×25mm Borchardt cartridge was designed by Georg Johann Luger for use in Hugo Borchardt's Borchardt C-93 pistol.
6.5×25mm CBJ         
PISTOL CARTRIDGE
6.5mm CBJ; .25 CBJ; 6.5 x 25mm; 6.5x25mm; 6.5×25 mm; 6.5×25mm; 6.5×25 CBJ-MS; 6.5×25 mm CBJ
The 6.5×25mm CBJ is a firearm cartridge designed by CBJ Tech AB, a Swedish weapon development company based in Kungsbacka, for its CBJ-MS submachine gun/personal defence weapon.
Bundesautobahn 65         
FEDERAL MOTORWAY IN GERMANY
Autobahn 65; A 65 motorway (Germany); A65 motorway (Germany); BAB 65
is an autobahn in southwestern Germany. The newest section, between Neustadt and Landau, was opened only in the early 1990s.

Wikipedia

Carl Wilhelm Borchardt

Carl Wilhelm Borchardt (22 February 1817 – 27 June 1880) was a German mathematician.

Borchardt was born to a Jewish family in Berlin. His father, Moritz, was a respected merchant, and his mother was Emma Heilborn. Borchardt studied under a number of tutors, including Julius Plücker and Jakob Steiner. He studied at the University of Berlin under Lejeune Dirichlet in 1836 and at the University of Königsberg in 1839. In 1848 he began teaching at the University of Berlin.

He did research in the area of the arithmetic-geometric mean, continuing work by Gauss and Lagrange. He generalised the results of Kummer on diagonalising symmetric matrices, using determinants and Sturm functions. He was also an editor of Crelle's Journal from 1856 to 1880, during which time it was known as Borchardt's Journal.

He died in Rüdersdorf, Germany. His grave is preserved in the Protestant Friedhof III der Jerusalems- und Neuen Kirchengemeinde (Cemetery No. III of the congregations of Jerusalem's Church and New Church) in Berlin-Kreuzberg, south of Hallesches Tor.