You are writing a thesis in computer science.

I can use my own personal experience as a guide in answering your question. Rarely, if ever, have I seen symbol repetition in a single college textbook on anything science/math related. However, across different subject matter and their associated different textbooks we do see symbol repetition. A college textbook on calculus might very well use similar symbols as a college textbook on physics.

Your thesis will get confusing if you use X for this and X for that in a single thesis. In my estimation, you have to come up with a way to clearly convey the differences to the readers. You shouldn't confuse the readers in your thesis. It's counter to conveying the fact that you have a mastery of your subject matter. All that being said, I don't think it will be difficult to differentiate all of your symbols. There are many different combinations you can use to convey differences consistently through your thesis.

This may be a longshot suggestion, but perhaps you could start incorporating symbols from your computer's "Character Map" GUI. For example: Ǟ ź Ǥ

Those three are all from the Arial selection from "Character Map". There are many others.

I don't see any problem whatsoever with re-using a symbol that represents the same thing throughout your thesis. That is done everywhere and in every college textbook I've ever seen. For example, if $_rho$ means density throughout the thesis then you should be able to use it whenever density is discussed.

You are writing a thesis in computer science.

I can use my own personal experience as a guide in answering your question. Rarely, if ever, have I seen symbol repetition in a single college textbook on anything science/math related. However, across different subject matter and their associated different textbooks we do see symbol repetition. A college textbook on calculus might very well use similar symbols as a college textbook on physics.

Your thesis will get confusing if you use X for this and X for that in a single thesis. In my estimation, you have to come up with a way to clearly convey the differences to the readers. You shouldn't confuse the readers in your thesis. It's counter to conveying the fact that you have a mastery of your subject matter. All that being said, I don't think it will be difficult to differentiate all of your symbols. There are many different combinations you can use to convey differences consistently through your thesis.

This may be a longshot suggestion, but perhaps you could start incorporating symbols from your computer's "Character Map" GUI. For example: Ǟ ź Ǥ

Those three are all from the Arial selection from "Character Map". There are many others.

I don't see any problem whatsoever with re-using a symbol that represents the same thing throughout your thesis. That is done everywhere and in every college textbook I've ever seen. For example, if "D" means density throughout the thesis then you should be able to use it whenever density is discussed.

You are writing a thesis in computer science.

I can use my own personal experience as a guide in answering your question. Rarely, if ever, have I seen symbol repetition in a single college textbook on anything science/math related. However, across different subject matter and their associated different textbooks we do see symbol repetition. A college textbook on calculus might very well use similar symbols as a college textbook on physics.

Your thesis will get confusing if you use X for this and X for that in a single thesis. In my estimation, you have to come up with a way to clearly convey the differences to the readers. You shouldn't confuse the readers in your thesis. It's counter to conveying the fact that you have a mastery of your subject matter. All that being said, I don't think it will be difficult to differentiate all of your symbols. There are many different combinations you can use to convey differences consistently through your thesis.

This may be a longshot suggestion, but perhaps you could start incorporating symbols from your computer's "Character Map" GUI. For example: Ǟ ź Ǥ

Those three are all from the Arial selection from "Character Map". There are many others.

You are writing a thesis in computer science.

I can use my own personal experience as a guide in answering your question. Rarely, if ever, have I seen symbol repetition in a single college textbook on anything science/math related. However, across different subject matter and their associated different textbooks we do see symbol repetition. A college textbook on calculus might very well use similar symbols as a college textbook on physics.

Your thesis will get confusing if you use X for this and X for that in a single thesis. In my estimation, you have to come up with a way to clearly convey the differences to the readers. You shouldn't confuse the readers in your thesis. It's counter to conveying the fact that you have a mastery of your subject matter. All that being said, I don't think it will be difficult to differentiate all of your symbols. There are many different combinations you can use to convey differences consistently through your thesis.

This may be a longshot suggestion, but perhaps you could start incorporating symbols from your computer's "Character Map" GUI. For example: Ǟ ź Ǥ

Those three are all from the Arial selection from "Character Map". There are many others.

I don't see any problem whatsoever with re-using a symbol that represents the same thing throughout your thesis. That is done everywhere and in every college textbook I've ever seen. For example, if $_rho$ means density throughout the thesis then you should be able to use it whenever density is discussed.