the proposition that is the object of ..

One definition states specifically that it is the antecedent to a conditional proposition

What is the distinction between a proposition and a theorem

A theorem is something that is proved deductively using logical reasoning or inference (think about what you do in a formal logical system like propositional logic).

This proposition, you say, is of such and such type, belongs in this or thathistorical category, and so on.

A proposition made as a basis for reasoning, ..

As a student who only participated in science fairs growing up, my view on research was skewed to look at a topic, create a statement/guess on why something happened, and then set out to prove it. And as I entered college I realized that though I had chosen to study history I was truly only trained in the scientific method. I lacked the skill of looking at a topic and creating a question to answer, rather than trying to prove a hypothesis.

As an adjunct to my proposition,

The had already produced strong evidence in favor of theproposition, that the solution to the solar neutrino problem lay in the phenomena of oscillationbetween neutrino types.

It is simply a fallaciously inducted proposition that is based on observations of reversible ..