The phrase "a main claim" is correct and usable in written English.
It can be used when discussing the primary assertion or argument in a piece of writing or a discussion.
Example: "In her essay, the author presents a main claim that climate change is primarily driven by human activity."
Alternatives: "a primary assertion" or "a central argument."
David plays Boris Yellnikoff, a physicist whose main claim to fame is that he was "considered" for a Nobel Prize.
There is also Toast Of New York, a British horse whose main claim to fame in the United States is a second to Shared Belief in the Pacific Classic at Del Mar.
As a young man his main claim to fame was jumping naked off Kingston bridge into the Thames.
But they do not say how they would do it.Opinion polls say the favourite is Noynoy Aquino, a nondescript senator whose main claim to fame is that he is the son of President Corazon Aquino, who was the nemesis of the dictator Ferdinand Marcos.
Harold has a friend, Col. Looseleaf Harper, whose main claim to distinction is dropping an atom bomb on Nagasaki.
But support for ID cards was part of the deal Mr Blunkett did recently with the French interior minister, Nicolas Sarkozy, to close the Sangatte refugee camp, because the French believe that their absence encourages immigrants.Mr Blunkett's other main claim for a national ID card is that it would help tackle identity fraud, which the Home Office estimates costs £1.3 billion ($2 billion) a year.
We assume that each main claim induces a by-claim.
The Kammok is a lightweight portable hammock whose main claim to fame is its LunarWave fabric.
The show was "Musical Chairs," an undistinguished little musical whose main claim to fame was the theater in which it played: the Rialto, a former pornographic movie house on West 42nd Street that had gone legit.
Senator Tester was heavily involved in the food safety act passed by Congress in 2010; his main claim was an amendment that shielded small farms and food processers from new regulations.
