- published: 14 Jan 2016
- views: 3845716
One half is the irreducible fraction resulting from dividing one by two (½), or any number by its double; multiplication by one half is equivalent to division by two. It appears often in mathematical equations, recipes, measurements, etc. Half can also be said to be one part of something divided into two equal parts.
For instance, the area S of a triangle is computed
One half also figures in the formula for calculating figurate numbers, such as triangular numbers and pentagonal numbers:
and in the formula for computing magic constants for magic squares
The Riemann hypothesis states that every nontrivial complex root of the Riemann zeta function has a real part equal to 1/2.
One half has two different decimal expansions, the familiar 0.5 and the recurring 0.49999999... It has a similar pair of expansions in any even base. It is a common trap to believe these expressions represent distinct numbers: see the proof that 0.999... equals 1 for detailed discussion of a related case.
½ is also one of the few fractions to get a key of its own on typewriters (see fractions). It also gets its own point in some early extensions of ASCII at 171; and in Unicode, it gets its own code point at U+00BD (decimal 189) in the C1 Controls and Latin-1 Supplement block, and a cross-reference in the Number Forms block, which contains some other fractions.
It might take sometime, don't ask why
some things just happen, in the blink of an eye
all that we have has a moment's guarantee
a transient pleasure destined to flee
Today I will love you, like we've only one night
today I will give you half of my life.
Take it with you wherever you go.
Sit it next to you when you're not feeling whole.
It comes when it wants, all discretions aside
just when you find your groove the earth begins to slide
Today I will love you, like we've only one night
today I will give you half of my life.
Take it with you and keep it alive
treasure this moment, we stole from our lives.
I can count on my hand what I hold in faith
this journey is programmed to give and to take
but I choose to believe and I choose not to be used
I choose to take the fall and I've chosen you
Today I will love you, like we've only one night
today I will give you half of my life
take it with you wherever you go
sit it next to you when you're not feeling whole
Today I will love you, like we've only one night
today I will give you half of my life.
Take it with you and keep it alive
treasure this moment, we stole from our lives.