scop said:Can anyone refer me to a paper where the "plus sign in triangle", "minus sign in triangle", and/or "multiplication sign in triangle" are used? I'm reading a paper from the 80's where these symbols act on an image ("internal law" and "external law"); however, I'd like to see the symbols applied elsewhere. A textbook resource is fine as well. Thank you!
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The plus sign in a triangle is used in mathematics to indicate addition. It represents the operation of combining two or more quantities to find their sum.
In geometry, the plus sign in a triangle is used to represent a line segment or vector that is added to another line segment or vector. It is also used to indicate the direction of a vector.
The minus sign in a triangle is used to indicate subtraction. It represents the operation of taking away one quantity from another to find their difference.
In trigonometry, the minus sign in a triangle is used to represent a negative angle or angle of rotation in the clockwise direction. It is also used to indicate the opposite or negative side of a triangle in relation to an angle.
The times symbol in a triangle is used to indicate multiplication. It represents the operation of repeated addition, where one quantity is added to itself a certain number of times.