Mathematical Symbols علائم ریاضی

Mathematical Symbols

+  plus or positive  -  minus or negative  ±  plus or minus, positive or negative  error margin  ×  multiplied by  ÷  divided by  /  divided by  =  equal to  identically equal to  ≠  not equal to  not identically equal to  approximately equal to  ~  of the order of or similar to  >  greater than  <  less than  not greater than  not less than  ::  as  for all  there exists { }  set < >  mean  belongs to  not belongs to  is equivalent to  implies  !  factorial .irancivilcenter.com            http://mahdihashemi.blogfa.com/

≥  greater than or equal to  ≤  less than or equal to  much greater than  much less than  √  square root  Infinity  proportional to  ∑  sum of  ∏  product of  difference  vector differential  therefore  ∠  angle  ||  parallel to  ⊥  perpendicular to  :  is to  because  intersection  union  subset  is not a subset  ø  empty  maps into, approaches the limit  …  ellipsis   .  multiply/times,  scalar product of vectors