Himmelblau is a German language surname, which means "skyblue".Behind the Name. "Surname Himmel". Retrieved on 26 January 2016.Behind the Name. "Surname Blau". Retrieved on 26 January 2016. Notable people with the surname include:
David Himmelblau (1924–2011), American scientist Fabian Himmelblau (1860–1931), Polish bookseller and publisher
See also Coop Himmelb(l)au, an architectural firm Himmelblau's function, in mathematical optimization PerfektBreitHimmelblau, a set of songs Himmelblau, an open source software project which integrates Linux systems with Entra Id and Intune.
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