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Example
x
x
x
Indexes
There are three expressions for describing indexes: indexes, chem, and tensor.
indexes: The indexes expression describes any number of subscripts and superscripts. The first operand is
the number of superscripts and the second operand is the number of subscripts. Subsequent operands
define the subscripts and then the superscripts.
Note that the number of superscripts is listed before the number of subscripts. However, superscript operands
are listed after subscript operands.
The following table contains an example of each indexes form.
Example
x
1
x
12
1
x
12
x
2
x
1
34
x
12
chem: The chem expression defines pre-upper and pre-lower indexes, subscripts, and superscripts. Each
position can have one expression. The following table shows all possible forms of chem.
Example
x
1
1
x
1
x
2
x
1 2
1 2
x
1
x
2 3
MathFullForm statement
<MathFullForm `substitution[char[x],char[x],char[x]]'>
MathFullForm statement
<MathFullForm `indexes[0,1,char[x],num[1,"1"]]'>
<MathFullForm `indexes[0,2,char[x],num[1,"1"],num[2,"2"]]'>
<MathFullForm `indexes[1,0,char[x],num[1,"1"]]'>
<MathFullForm `indexes[2,0,char[x],num[1,"1"],num[2,"2"]]'>
<MathFullForm `indexes[1,1,char[x],num[1,"1"],num[2,"2"]]'>
<MathFullForm `indexes[2,2,char[x],num[1,"1"],num[2,"2"],
num[3,"3"],num[4,"4"]]'>
MathFullForm statement
<MathFullForm `chem[1,0,0,0,char[x],num[1,"1"]]'>
<MathFullForm `chem[0,0,1,0,char[x],num[1,"1"]]'>
<MathFullForm `chem[1,0,1,0,char[x],num[1,"1"],num[2,"2"]]'>
<MathFullForm `chem[1,1,0,0,char[x],num[1,"1"],num[2,"2"]]'>
<MathFullForm `chem[0,0,1,1,char[x],num[1,"1"],num[2,"2"]]'>
<MathFullForm `chem[1,1,1,0,char[x],num[1,"1"],num[2,"2"],
num[3,"3"]]'>
MIF Equation Statements
x
dx
page 205
x
x d
ADOBE FRAMEMAKER 6.0
209
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