- #1
EdisT
- 17
- 0
Hey, I'm unsure why the following returns an error:
Any ideas on how to fix this?
Any ideas on how to fix this?
Fixing Error in Tag Times: Get Quick Solutions!
- Context: Mathematica
- Thread starter EdisT
- Start date
-
- Tags
- Error Function Mathematica Tag
Click For Summary
Discussion Overview
The discussion revolves around an error encountered in Mathematica related to the definition and use of a variable named K, specifically in the context of function definitions and the error message involving "Tag Times." Participants explore the implications of the error message and seek clarification on its meaning.
Discussion Character
- Technical explanation
- Debate/contested
Main Points Raised
- Some participants suggest that the error arises because K has already been defined, and redefining it requires removing the previous definition.
- One participant notes that the error message is not very helpful and points out that it occurs after a substitution has been made, indicating that K was substituted with a mathematical expression that cannot be used on the left side of a definition.
- Another participant expresses confusion over the term "Tag Times" in the error message and questions whether "Times" refers to a variable in the original script.
- A later reply clarifies that "Times" refers to multiplication in Mathematica's core language, not a variable.
Areas of Agreement / Disagreement
Participants express differing views on the clarity of the error message and its implications, with some agreeing on the nature of the error while others seek further clarification. The discussion remains unresolved regarding the best approach to handle the error.
Contextual Notes
Participants highlight the complexity of the error message and the need for careful examination of the mathematical expressions involved. There is an acknowledgment of the limitations in understanding the error without additional context from the original script.
- #2
DrClaude
Mentor
- 8,478
- 5,697
It means that you already defined K. Entering K = . will remove the previous definition of K, so you can define it again as a function.
- #3
EdisT
- 17
- 0
Ah thank you!DrClaude said:
- #4
Mark44
Mentor
- 38,106
- 10,661
Not the most helpful error message...
- #5
DrClaude
Mentor
- 8,478
- 5,697
That's because the error occurs after the substitution has been done. If you look carefully,Mark44 said:
you will see the presence of [q_, N_] after a bunch of math. That bunch of math is what K was equal to: K[q_, N_] was substituted by <<value of K>>[q_, N_], including some mathematical operations that cannot appear on the left side of := .EdisT said:
It doesn't take long to get acquainted with "Tag [...] is Protected" in Mathematica, and one never forgets what they are due to
- #6
Mark44
Mentor
- 38,106
- 10,661
I get "Tag" but "Tag Times in ... " is inscrutable. Is "Times" the name of a variable in the OP's script?
- #7
DrClaude
Mentor
- 8,478
- 5,697
No, it's multiplication (in the core Mathematica language).Mark44 said:
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