An idioglossia is an idiosyncratic language invented and spoken by only one person or very few people.
 Most often, "idioglossia" refers to the "private languages" of young children, especially twins, the latter being more specifically known as cryptophasia, and commonly referred to as twin talk or twin speech.
Tsolyáni is one of several languages invented by M. A. R. Barker, developed in the mid-to-late 1940s in parallel with his legendarium leading to the world of Tékumel as described in the Empire of the Petal Throne roleplaying game, published by TSR in 1975.
The Adamic language is, according to Jewish tradition (as recorded in the "midrashim") and some Christians, the language spoken by Adam (and possibly Eve) in the Garden of Eden.
 It is variously interpreted as either the language used by God to address Adam (the divine language), or the language invented by Adam with which he named all things (including Eve), as in .
Martin Richards (born 21 July 1940) is a British computer scientist known for his development of the BCPL programming language which is both part of early research into portable software, and the ancestor of the B programming language invented by Ken Thompson in early versions of Unix and which Dennis Ritchie in turn used as the basis of his widely used C programming language.
Muhammad Abd-al-Rahman Barker (born Phillip Barker, November 3, 1929 – March 16, 2012), was a professor of Urdu and South Asian Studies who created one of the first roleplaying games, Empire of the Petal Throne, and wrote several fantasy/science fantasy novels based in his associated world setting of Tékumel.
The Verdurian language (known in Verdurian as soa Sfahe, "the Speech") is a constructed language invented by Mark Rosenfelder in 1995 and hosted at his website, Zompist.com.
Eurolengo is a constructed language invented by Leslie Jones in 1972.
 He intended that it would become a common European language, "intended as a practical tool for business and tourism."
The Ascian Language is a fictional language invented by Gene Wolfe for his fantasy series "The Book of the New Sun".
Bongo-Bongo in linguistics is used as a name for an imaginary language.
 It is most commonly invoked in etymological studies to conceptualize random similarities between unrelated languages.
 It has also been used as a name for a constructed language invented by John Lyons as a teaching tool in linguistics.
SWEET16 is an interpreted byte-code language invented by Steve Wozniak and implemented as part of the Integer BASIC ROM in the Apple II series of computers.
 It was created because Wozniak needed to manipulate 16-bit pointer data in his implementation of BASIC, and the Apple II was an 8-bit computer.

Question: Tsolyáni was a language invented by a professor of which subjects?
Answer: Urdu and South Asian Studies