Space character intersection operator

The first character of a name must be a letter. Subsequent characters can be letters or numbers or the period or underline character. Spaces are not allowed (the space character is the intersection operator) Excel will substitute an underline character for a space in any name that it proposes based on text in worksheet cells. 

If the data table is a two-dimensional one, as in Figure 3-7, cells are referenced both by row and by column. Excel proposes the row and column titles as names, as shown in the Create Names dialog box of Figure 3-8. Excel will apply the name max to the range F5 I5, the name band1 to the range F5 F7, etc. The intersection operator (the space character) can then be used to identify the named variables. For example, bands A 0 refers to cell H6. 

In the following examples, the point group of a variety of complexes is used to derive the symmetry labels for the atomic orbitals (AOs) of the central atom. The central atom orbitals are at the intersection of all the symmetry elements in the point groups considered and so are never moved through space by an operation. However, they may be reorientated, and so we will work out the characters for each AO set (p, d) and then apply the reduction formula to find the appropriate irreducible representation labels. These results will be used in Chapter 7 when assembling MOs for some of the complexes, and there we will use the fact that the standard character tables have the p and d functions written in the rightmost columns. For the central atom, this means that we can simply read off the symmetry label from the table. 

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See also in sourсe #XX -- [ ]

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