Vertraulicher Briefwechsel mit Sigmund Pruschenk, edited by V.
528-623; Sigmund Riezler, Die literarischen Widersacher der Piipste zur Zeit Ludwig des Baiers (Leipzig, 1874).
The system of the quadratic and cubic, consisting of 15 forms, and that of two cubics, consisting of 26 forms, were obtained by Salmon and Clebsch; that of the cubic and quartic we owe to Sigmund Gundelfinger (Programm Stuttgart, 186 9, 1 -43); that of the quadratic and quintic to Winter (Programm Darmstadt, 1880); that of the quadratic and sextic to von Gall (Programm Lemgo, 3873); that of two quartics to Gordan (Math.
At Halle he was influenced, especially in philosophy, by Sigmund J.
Brandenburg, Keinig Sigmund and Kurfurst Friedrich I.
Berger, Johannes Hus and Konig Sigmund (1871); E.
In the department of belles-lettres he wrote a good deal under such pseudonyms as Christian Deutsch, Gottfried Flammberg and Sigmund Sturm.
Wattenbach, Leipzig, 1897); Sigmund Billing, Kleine Chronik der Stadt Kolmar (Colmar, 1891); Hund, Kolmar vor and wiihrend seiner Entwickelung zur Reichsstadt (Strassburg, 1899); J.
Seckendorf-Gudent (1813-1875), a Wurttemberg official; Karl Sigmund (1744-1785), writer; Franz Karl Leopold v.
Fcereyinga tells the tale of the conversion of the Fa revs or Faroes, and the lives of its chiefs Sigmund and Leif, composed in the 13th century from their separate sagas by an Icelander of the Sturlung school.
The native literature of the islands consists of the Faereyinga Saga, dealing with the period of Sigmund Bresterson, and a number of popular songs and legends of early origin.