File: NUM_GE_CONV.doc

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\DOC NUM_GE_CONV

\TYPE {NUM_GE_CONV : conv}

\SYNOPSIS
Proves whether one numeral is greater than or equal to another.

\KEYWORDS
conversion, number, arithmetic.

\DESCRIBE
If {n} and {m} are two numerals (e.g. {0}, {1}, {2}, {3},...), then
{NUM_GE_CONV `n >= m`} returns:               

{
   |- n >= m <=> T       or       |- n >= m <=> F
}
\noindent depending on whether the natural number represented by {n} is greater 
than or equal to the one represented by {m}.

\FAILURE
{NUM_GE_CONV tm} fails if {tm} is not of the form {`n >= m`}, where {n} and {m}
are numerals.

\EXAMPLE
{
  # NUM_GE_CONV `1 >= 0`;;
  val it : thm = |- 1 >= 0 <=> T
  
  # NUM_GE_CONV `181 >= 211`;;
  val it : thm = |- 181 >= 211 <=> F
}
       
\USES
Performing basic arithmetic reasoning while producing a proof.         

\SEEALSO
NUM_ADD_CONV, NUM_DIV_CONV, NUM_EQ_CONV, NUM_EVEN_CONV, NUM_EXP_CONV,
NUM_FACT_CONV, NUM_GT_CONV, NUM_LE_CONV, NUM_LT_CONV, NUM_MAX_CONV, 
NUM_MIN_CONV, NUM_MOD_CONV, NUM_MULT_CONV, NUM_ODD_CONV, NUM_PRE_CONV,
NUM_REDUCE_CONV, NUM_RED_CONV, NUM_REL_CONV, NUM_SUB_CONV, NUM_SUC_CONV.

\ENDDOC