Does this symbol mean decrease

Answer 1

There really isn't a symbol there. Here are some mathematical symbols if that's what you are looking for. One of the things missing here is: Pi

a + b

plus

Add the two numbers.

a - b

minus

Subtract the second number from the first.ab,

a xb,ab,

ora(b)

times

Multiply one number times the other.

ab

or a/ b

Divided by

Divide the first number by the second.

a = b

Equals

The two numbers are equal in value.

a b

Does not equal

The two numbers are not equal in value.

a b

Approximately equal

The two numbers are approximately equal in value.

a < b

Less than

The first number has a lesser value than the second.

a > b

Greater than

The first number has a greater value than the second.

a b

Less than or equal to

The first number has a value that is less than or equal to the second.

a b

Greater than or equal to

The first number has a value that is greater than or equal to the second.

a!

Factorial

The product of all whole numbers from 1 to a.

a2

a squared

Multiply a times a.

Square root

The number which multiplied by itself equals a.

a

Sum or summation

The sum of all of the numbers that a can equal.