substitution

I am evaluating Scientific Notebook trial version.

I can make a definition for u variables but not for p variables.  See attached screen shot.  The first two definitions work but the last gives the error that the expression is recursive.  How is that recursive?  Why do I not have the same trouble with u?

 

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DefineError.JPG35.8 KB
John MacKendrick's picture

Generally, the interface to

Generally, the interface to the computation engine treats an accented, decorated, or tagged variable to be the same as an unaccented character.

An exception occurs if, by adding the accent, the character becomes one of the Latin characters available in the symbol panels. Since the ũ can be found in the symbol panel, it is treated differently than the u. If a tilde is placed over the p, there is no corresponding symbol for this character, so the tilde is just stripped before sending it to the MuPAD engine.