fix i.e. and a.k.a.

Algebraic_foundations/doc/Algebraic_foundations/CGAL/number_utils.h

@@ -22,7 +22,7 @@ namespace CGAL {
 \ingroup PkgAlgebraicFoundations
 
 The template function `compare` compares the first argument with respect to 
-the second, i.e. it returns `CGAL::LARGER` if \f$ x\f$ is larger then \f$ y\f$. 
+the second, i.e.\ it returns `CGAL::LARGER` if \f$ x\f$ is larger then \f$ y\f$. 
 
 In case the argument types `NT1` and `NT2` differ, 
 `compare` is performed with the semantic of the type determined via 
@@ -138,9 +138,9 @@ namespace CGAL {
 /*!
 \ingroup PkgAlgebraicFoundations
 
-The function `integral_division` (a.k.a. exact division or division without remainder) 
+The function `integral_division` (a.k.a.\ exact division or division without remainder) 
 maps ring elements \f$ (x,y)\f$ to ring element \f$ z\f$ such that \f$ x = yz\f$ if such a \f$ z\f$ 
-exists (i.e. if \f$ x\f$ is divisible by \f$ y\f$). Otherwise the effect of invoking 
+exists (i.e.\ if \f$ x\f$ is divisible by \f$ y\f$). Otherwise the effect of invoking 
 this operation is undefined. Since the ring represented is an integral domain, 
 \f$ z\f$ is uniquely defined if it exists. 
 

Algebraic_foundations/doc/Algebraic_foundations/Concepts/AlgebraicStructureTraits--Gcd.h

@@ -9,7 +9,7 @@ The greatest common divisor (\f$ gcd\f$) of ring elements \f$ x\f$ and \f$ y\f$
 ring element \f$ d\f$ (up to a unit) with the property that any common divisor of 
 \f$ x\f$ and \f$ y\f$ also divides \f$ d\f$. (In other words: \f$ d\f$ is the greatest lower bound 
 of \f$ x\f$ and \f$ y\f$ in the partial order of divisibility.) We demand the \f$ gcd\f$ to be 
-unit-normal (i.e. have unit part 1). 
+unit-normal (i.e.\ have unit part 1). 
 
 \f$ gcd(0,0)\f$ is defined as \f$ 0\f$, since \f$ 0\f$ is the greatest element with respect 
 to the partial order of divisibility. This is because an element \f$ a \in R\f$ is said to divide \f$ b \in R\f$, iff \f$ \exists r \in R\f$ such that \f$ a \cdot r = b\f$. 

Algebraic_foundations/doc/Algebraic_foundations/Concepts/AlgebraicStructureTraits--IntegralDivision.h

@@ -7,7 +7,7 @@
 
 Integral division (a.k.a. exact division or division without remainder) maps 
 ring elements \f$ (x,y)\f$ to ring element \f$ z\f$ such that \f$ x = yz\f$ if such a \f$ z\f$ 
-exists (i.e. if \f$ x\f$ is divisible by \f$ y\f$). Otherwise the effect of invoking 
+exists (i.e.\ if \f$ x\f$ is divisible by \f$ y\f$). Otherwise the effect of invoking 
 this operation is undefined. Since the ring represented is an integral domain, 
 \f$ z\f$ is uniquely defined if it exists. 
 

Algebraic_foundations/doc/Algebraic_foundations/Concepts/AlgebraicStructureTraits--IsSquare.h

@@ -44,7 +44,7 @@ typedef Hidden_type second_argument;
 /// @{
 
 /*! 
-returns <TT>true</TT> in case \f$ x\f$ is a square, i.e. \f$ x = y*y\f$. 
+returns <TT>true</TT> in case \f$ x\f$ is a square, i.e.\ \f$ x = y*y\f$. 
 \post \f$ unit\_part(y) == 1\f$. 
 
 */ 

Algebraic_foundations/doc/Algebraic_foundations/Concepts/AlgebraicStructureTraits--UnitPart.h

@@ -8,7 +8,7 @@ element.
 
 The mathematical definition of unit part is as follows: Two ring elements \f$ a\f$ 
 and \f$ b\f$ are said to be associate if there exists an invertible ring element 
-(i.e. a unit) \f$ u\f$ such that \f$ a = ub\f$. This defines an equivalence relation. 
+(i.e.\ a unit) \f$ u\f$ such that \f$ a = ub\f$. This defines an equivalence relation. 
 We can distinguish exactly one element of every equivalence class as being 
 unit normal. Then each element of a ring possesses a factorization into a unit 
 (called its unit part) and a unit-normal ring element 

Algebraic_foundations/doc/Algebraic_foundations/Concepts/IntegralDomainWithoutDivision.h

@@ -6,7 +6,7 @@
 This is the most basic concept for algebraic structures considered within CGAL. 
 
 A model `IntegralDomainWithoutDivision` represents an integral domain, 
-i.e. commutative ring with 0, 1, +, * and unity free of zero divisors. 
+i.e.\ commutative ring with 0, 1, +, * and unity free of zero divisors. 
 
 <B>Note:</B> A model is not required to offer the always well defined integral division.