Question: Are Leonid Khachiyan and Alan Hovhaness of the same nationality?

Context paragraphs:
And God Created Great Whales: And God Created Great Whales, Op. 229, No. 1, is a symphonic poem for orchestra and recorded whale sounds by the American composer Alan Hovhaness.  The work was commissioned by Andre Kostelanetz and the New York Philharmonic, who premiered the piece June 11,1970 in New York City.  The piece has been recorded numerous times and remains one of Hovhaness's most popular compositions.  It has also been credited as an early work in the movement to save whales from extinction, alongside John Tavener's 1966 cantata "The Whale".  The title of the work comes from Genesis 1:21 in the King James Version of the Bible.

Alan Hovhaness: Alan Hovhaness ( ; March 8, 1911 – June 21, 2000) was an American composer.  He was one of the most prolific 20th-century composers, with his official catalog comprising 67 numbered symphonies (surviving manuscripts indicate over 70) and 434 opus numbers.  The true tally is well over 500 surviving works since many opus numbers comprise two or more distinct works.

List of compositions by Alan Hovhaness: This is a list of compositions by Alan Hovhaness (1911–2000), ordered by opus number.  Composition dates shown in Roman font are as given at Hovhaness.com, while conflicting dates from Kunze or "New Grove" are shown in italics.  Similarly, instrumentation shown in Roman font is as given at the Hovhaness.com website.  Several place names and other names in composition titles are linked to disambiguation pages rather than to specific Wikipedia articles, because Hovhaness did not specify which "Wildcat Mountain", for instance, had been intended.

Symphony No. 1 (Hovhaness): The Symphony No. 1, Op. 17, Exile is the first symphony by the American composer Alan Hovhaness.  The piece was composed in 1936 and was premiered by the BBC Symphony Orchestra under the conductor Leslie Heward in 1939.  The work commemorates the genocide of the Armenian people, including Hovhaness's paternal family, during the Ottoman Turkish occupation of World War I.  The symphony is dedicated to English writer and philosopher Francis Bacon.

Symphony No. 50 (Hovhaness): Symphony No. 50, Op. 360, Mount St. Helens is a three-movement orchestral composition by the American composer Alan Hovhaness.  The symphony was commissioned by former Hovhaness publisher C.F. Peters and was completed January 24, 1982.  It premiered March 2, 1984, and was performed by the San Jose Symphony under conductor George Cleve.  The piece commemorates the volcano Mount St. Helens, culminating in the events of its 1980 eruption, which Hovhaness had witnessed from his Seattle home.

Symphony No. 22 (Hovhaness): The Symphony No. 22, Op. 236, City of Light is a four-movement symphony for orchestra by the American composer Alan Hovhaness.  The work was commissioned by the Birmingham Symphony Orchestra for the centennial of Birmingham, Alabama and was completed in 1970.  The work has been recorded multiple times and remains one of Hovhaness's more popular compositions.

Symphony No. 63 (Hovhaness): The Symphony No. 63, Op. 411, Loon Lake is a symphony for orchestra in two movements by the American composer Alan Hovhaness.  The work was commissioned in September 1987 by the New Hampshire Music Festival and the Loon Preservation Society.  It was completed in early 1988 and premiered August 18, 1988, with conductor Thomas Nee leading the New Hampshire Music Festival Orchestra.  The ending of the piece was later revised by Hovhaness at the request of his wife; the revised symphony premiered July 2, 1991, and is the only version available on recording.

Martin Berkofsky: Martin Berkofsky (9 April 1943 – 30 December 2013) was an American classical pianist, known primarily for his interpretations of music by Franz Liszt and Alan Hovhaness.

Symphony No. 66 (Hovhaness): The Symphony No. 66, Op. 428, Hymn to Glacier Peak is an orchestral composition in three movements and the penultimate symphony by the American composer Alan Hovhaness.  The work was commissioned by the Seattle Youth Symphony Orchestra and was completed in 1992, shortly before its premiere by the Seattle Youth Symphony, conducted by Ruben Gurevich, at the Seattle Opera House on May 10, 1992.  The title of the work comes from the stratovolcano Glacier Peak in the Cascade Range, visible from Hovhaness's home in Seattle, Washington.

Leonid Khachiyan: Leonid Genrikhovich Khachiyan (Armenian: Լեոնիդ Գենրիխովիչ Խաչիյան ; Russian: Леонид Генрихович Хачиян ; May 3, 1952 – April 29, 2005) was a Soviet mathematician of Armenian descent who taught Computer Science at Rutgers University.  He was most famous for his ellipsoid algorithm (1979) for linear programming, which was the first such algorithm known to have a polynomial running time.  Even though this algorithm was shown to be impractical due to the high degree of the polynomial in its running time, it has inspired other randomized algorithms for convex programming and is considered a significant theoretical breakthrough.

Supporting paragraphs: Leonid Khachiyan Alan Hovhaness
Answer: no