In the U.S., proof equals twice the percentage of alcohol in the beverage.
In the UK, and several European countries, the 'proof' of alcohol is not given, it is stated as a percentage of volume.
However this is somewhat misleading.
Pure alcohol, which would be 100% alcohol, very difficult to produce, would be classed as 200 proof.
Confusing to the uninitiated. All spirit drinks sold retail in the UK must state their alcohol by volume and not their 'proof'.
Mathematical logic and proof theory (a branch of mathematical logic) for proof
if it has an equal sign then it is an equation
Yes mathematical equations can be solved.
An equation
Profit = total revenue - total costs is the fundamental mathematical equation for business.
The asterisk in a mathematical equation, usually in the context of a computer expression, means to multiply.
Man can not be summed up in a mathematical equation. I'd be suspicious of any system that made that claim.
It is the answer to a mathematical problem.
EQUATION
An equation or inequality that expresses a resource restriction in a mathematical model is called
Mathematical logic.
That's an equation.