When I was in college, I really didn't think discrete mathematics was that difficult. The reason is that discrete mathematics is more reasonable than mathematical analysis. For example, mathematical logic, it will not acquiesce that you know this and that, and will not use things that have not been said before as the premise of reasoning. Every step of reasoning is well-founded. Personally, I think mathematics should be learned in this way, with a system, starting with axioms, then proving theorems, and finally solving problems with theorems. The whole system is derived from several axioms. I like mathematical analysis. I saw that the assignment in the first class in the book was to prove that the cycle of 0.99999 is equal to 1. But the knowledge needed here, such as the density of real numbers, is not in the book, and the teacher does not add it. A hammer in the east and a hammer in the west make people dizzy when they come up. The subject thinks that discrete mathematics is difficult because this way of thinking has not been established since childhood, and everything starts from intuition, not from logical axioms and theorems, so it is difficult.

Personally, I feel that the order of college mathematics classes should be adjusted. Learn mathematical logic and set theory first (these two can be learned at the same time), then learn abstract algebra, and then learn other math classes. After learning abstract algebra, the mathematical world in my eyes suddenly changed, and this experience will not be known until I learn it. I'm thinking that if I study abstract algebra first and then mathematical analysis, I won't know anything about calculus.

Is discrete mathematics difficult? Either you try some courses in the math department, which will make you cry. Even some advanced mathematics courses in engineering fields, such as matrix theory and matrix analysis, are hard to make you cry.

The reason why you find it difficult is mainly because your foundation is not good enough, especially line generation, calculus and so on.

It's all jumping knowledge points ... you can learn some set theory or something, and it's not difficult, but everyone has different views on the difficulty. I think the homology of graduate students, CA and AG is probably 10+ times more difficult than discrete mathematics, but it is the same for those who understand. So we should prescribe the right medicine, classmate.