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Jack Thorne
https://www.dpmms.cam.ac.uk/~jat58/17 May 2024: On the average number of 2-Selmer elements of elliptic curves over F. ... Elliptic curves over Q. are modular. J. Eur. Math. Soc. 21 (2019), no. -
Is Cambridge biased?
https://www.dpmms.cam.ac.uk/~wtg10/biased.html5 May 2004: Finally, suppose that the average of f is significantly higher over A than it is over B. ... This probability increases with t, and the increase is very considerable when t is a couple of standard deviations higher than the average of f over B. -
MATHEMATICAL TRIPOS: PART IA Lent 2024 PROBABILITY JRNExample Sheet…
https://www.dpmms.cam.ac.uk/study/IA/Probability/2023-2024/pex3.pdf11 Jan 2024: 3. Let X be a Poisson random variable of parameter λ (0, ). (a) By optimizing the estimate of Question 2(b) over β, show that, for all x λ,. ... yet appeared? (b) What is the probability that the entire culture dies out eventually? -
The beginnings of Galois theory
https://www.dpmms.cam.ac.uk/~wtg10/galois.html29 Jan 2002: It says that the dimension of Q(b) over Q equals the dimension of Q(a) over Q times the dimension of Q(b) over Q(a). ... But what is the dimension of Q(b) over Q(a)? It means the dimension of the vector space of all linear combinations of powers of b, -
Michaelmas Term 2023-24 Numbers and Sets: Examples Sheet 1 ...
https://www.dpmms.cam.ac.uk/study/IA/Numbers%2BSets/2023-2024/numset1_2023.pdf12 Oct 2023: Write down its negation insymbolic form. (Here m, n, a, b should be understood as ranging over all natural numbers.). ... m n a b (n m) [(a = 1) (b = 1) (ab 6= n)]. -
Michaelmas Term 2023 Julian Sahasrabudhe Linear Algebra: Example…
https://www.dpmms.cam.ac.uk/study/IB/LinearAlgebra/2023-2024/lin-alg-ex4-2023.pdf24 Nov 2023: 1. The square matrices A and B over the field F are congruent if B = PT AP for some invertible matrixP over F. ... Which, if any, over Q?) Try to get away with the minimum calculation.(. -
Solving cubic equations
https://www.dpmms.cam.ac.uk/~wtg10/cubic.html25 Apr 2002: 2. =b? To answer that, we need to put it back in the original form, by multiplying out the bracket and taking b over to the left hand side. ... If we wish to carry this approach over to the cubic, then we should have clear answers to the following two -
Michaelmas Term 2023 Julian Sahasrabudhe Linear Algebra: Example…
https://www.dpmms.cam.ac.uk/study/IB/LinearAlgebra/2023-2024/lin-alg-ex2-2023.pdf30 Oct 2023: 5. Let A and B be n n matrices over a field F. ... Which over R? 8. Find the eigenvalues and give bases for the eigenspaces of the following complex matrices: 1 1 00 3 20 1 0. -
Michaelmas Term 2023 T.A. Fisher Galois Theory: Example Sheet ...
https://www.dpmms.cam.ac.uk/study/II/Galois/2023-2024/galois_theory-23-1.pdf10 Oct 2023: Suppose that α has minimal polynomial f over Q, and let β = α4.Find a, b, c Q such that β = a bα cα2. ... The elements α andβ are then said to be algebraically dependent over K.]. -
PART II REPRESENTATION THEORYSHEET 4 Unless otherwise stated, all ...
https://www.dpmms.cam.ac.uk/study/II/RepresentationTheory/2016-2017/repex4.pdf10 Jan 2017: PART II REPRESENTATION THEORYSHEET 4. Unless otherwise stated, all vector spaces are finite-dimensional over C. ... : a,b,x Fp. of matrices over the finite field Fp (p prime).
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