The phrase "at the proposition" is correct and usable in written English.
It can be used in contexts where you are discussing a specific proposal or suggestion.
Example: "The committee met to discuss the changes at the proposition of the new policy."
Alternatives: "regarding the proposal" or "concerning the suggestion".
He appears surprised at the proposition that he was the first cartoonist of his generation to use himself as a character in his strips.
Mitchell said: "There is considerable concern on both sides of the house at the proposition that Britain might withdraw from the European convention on human rights.
This paper aims at the proposition of novel architectures for radial basis function neural networks implementation on hardware with custom-precision floating-point operations for black-box system modeling.
My group in Strategic Planning was asked to look at the proposition, and ended up warning management that the deal had some serious risks, especially should the Dutch Guilder drop in value,or if ever we had to lay off people, given Dutch law requiring huge severance payments for long time employees.
It's somewhat understandable that the Greeks today would bristle at the proposition that to service their debt they auction off the Aegean islands, as suggested by Josef Schlarmann, a senior member of Chancellor Angela Merkel's Christian Democrats, and Frank Schäffler of their coalition partners, the Free Democrats.
It was rather shocking to see the panellists (a former Cabinet minister, an eminent lawyer, a TV personality, and a press commentator) all nod in nonchalant agreement at the proposition, and I immediately abandoned the role of impartial invigilator to take issue with them.
You can rest assured that droves of academics on the make are hacking away at the propositions in this book".
If you live in one of the communities where open space acquisition is being advocated, take a good look at the propositions and the proponents.
For there are fideistic believers, who quite unequivocally believe that when looked at objectively the proposition that God exists has a very low probability weight.
There is no denying that a proposition determines a set of possible worlds — namely, the worlds at which the proposition is true.
To believe something then is to locate yourself within a class of possible worlds; to believe that you inhabit one of the worlds at which the proposition is true.
