Template:Vec

A

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This template creates vectors using arrow notation in HTML, as an alternative to boldface.

Parameters[edit]

The template has three parameters:

  1. Vector symbol: Insert the character, i.e. A, Ω etc. Default is A; to immediately show the template is in use, and prevent the arrow moving and overlapping text to one side.
  2. Arrow direction: Select one of left, right, or double for the arrows →, ←, or ↔ respectively. The default is right.
  3. Arrow position: Select one of under or over to place the arrow over or under the character symbolizing the vector. The default is over.

The defaults for 2 and 3 are set to match the LaTeX analogue of \vec: .

Examples[edit]

No {{math}}[edit]

Illustration of all possibilities for italic A:

Default Overarrow Underarrow
Default A A A
Left A A A
Right A A A
Double A A A

with code:

Default Overarrow Underarrow
Default {} {} {}
Left {} {} {}
Right {} {} {}
Double {} {} {}

Formulae:

Vorticity of a fluid with velocity field u:

ω = ∇ × u

Tangential velocity in rigid body dynamics:

v = ω × r

Rotating reference frame:

dAdt = ​dAdtω × A
dA/dt = dA/dtω × A

Including {{math}}[edit]

Illustration of all possibilities for italic A:

Default Overarrow Underarrow
Default A A A
Left A A A
Right A A A
Double A A A

with code:

Default Overarrow Underarrow
Default {}}} {}}} {}}}
Left {}}} {}}} {}}}
Right {}}} {}}} {}}}
Double {}}} {}}} {}}}

Formulae:

Vorticity of a fluid with velocity field u:

ω = ∇ × u

Tangential velocity in rigid body dynamics:

v = ω × r

Rotating reference frame:

dAdt = ​dAdtω × A
dA/dt = dA/dtω × A

See also[edit]

  • For quantum state vectors, see {{braket}}
  • For more general templates, allowing arbitrary characters and diacritics set above or below one another, see {{overset}} and {{underset}}