Tietjen
Tietjen is a German surname. Notable people with the surname include:
- Bettina Tietjen (born 1960), German television presenter
- Friedrich Tietjen (1834–1895), German astronomer
- Heinz Tietjen (1881–1967), German conductor
- Henry Roland Tietjen (1891-1976), American Legislator (Utah)
- James J. Tietjen (1933–2016), American researcher and executive
- John Tietjen (1928–2004), American Lutheran clergyman, theologian
Other uses
- 2158 Tietjen, main-belt asteroid
- Wilhelm-Tietjen-Stiftung für Fertilisation, fertility research group
gollark: https://math.stackexchange.com/questions/1736942/transpose-a-matrix-then-flip-it-over-the-anti-diagonal-what-is-the-name-of-this
gollark: No, wait, hmm.
gollark: "Rotation" generally?
gollark: I mean, 0 and 1 are the first terms, sure...
gollark: No. I've vaguely read about recurrence relations and differential equations being related to matrices but don't know much.
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