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28 votes
6 answers
3k views

Alternative proofs of Schwartz–Zippel lemma

I'm only aware of two proofs of Schwartz–Zippel lemma. The first (more common) proof is described in the wikipedia entry. The second proof was discovered by Dana Moshkovitz. Are there any other ...
Dai Le's user avatar
  • 3,674
6 votes
5 answers
285 views

What is/are the lower bounds for finding a something akin to complex residue?

Given a function $\sum_{i=-N}^N{c_i x^i}$: $f(x) \equiv \sum_{i=-N}^N{c_i x^i}$ where $c_i$ is an integer; $0 \le c_i \le a$ for some $a$. The constant $c_0$ is desired, and we start with only $f(x)...
16 votes
3 answers
745 views

Hardness Guarantees for AES

Many public-key cryptosystems have some kind of provable security. For example, the Rabin cryptosystem is provably as hard as factoring. I wonder whether such kind of provable security exists for ...
Sadeq Dousti's user avatar
  • 16.6k
4 votes
1 answer
220 views

Optimizing multiplication in a partly commutative semigroup

Let us say I have a semigroup M and its basis B. I know which elements of B commute. What is the most efficient way to do multiplication in such a semigroup? Essentially, this is a question of how ...
jkff's user avatar
  • 9,011
6 votes
2 answers
673 views

Proof of a unique homomorphism from an initial object

What is the proof that there is only one homomorphism from an initial object to another object?
Jason Reich's user avatar

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