\begin{definition}[Definition:Arabic Numerals]
The '''Arabic numerals''' are:
{{begin-eqn}}
{{eqn | l = 1:
      | o = \)'''one'''\(:
      | r = \circ
      | c = 
}}
{{eqn | l = 2:
      | o = \)'''two'''\(:
      | r = \circ \, \circ
      | c = 
}}
{{eqn | l = 3:
      | o = \)'''three'''\(:
      | r = \circ \circ \circ
      | c = 
}}
{{eqn | l = 4:
      | o = \)'''four'''\(:
      | r = \circ \circ \circ \, \circ
      | c = 
}}
{{eqn | l = 5:
      | o = \)'''five'''\(:
      | r = \circ \circ \circ \circ \circ
      | c = 
}}
{{eqn | l = 6:
      | o = \)'''six'''\(:
      | r = \circ \circ \circ \circ \circ \, \circ
      | c = 
}}
{{eqn | l = 7:
      | o = \)'''seven'''\(:
      | r = \circ \circ \circ \circ \circ \circ \circ
      | c = 
}}
{{eqn | l = 8:
      | o = \)'''eight'''\(:
      | r = \circ \circ \circ \circ \circ \circ \circ \, \circ
      | c = 
}}
{{eqn | l = 9:
      | o = \)'''nine'''\(:
      | r = \circ \circ \circ \circ \circ \circ \circ \circ \circ
      | c = 
}}
{{eqn | l = 0:
      | o = \)'''zero'''\(:
      | r = \)or '''nought''', '''naught''', '''nil''', '''nothing''', '''cypher''', '''zilch''', '''kabutnik''', '''sweet Fanny Adams''', etc.\(
      | c = 
}}
{{end-eqn}}
They are used in conjunction with the positional decimal system of numeric representation: see Basis Representation Theorem.
\end{definition}