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8 Jan 2015: Read about Nick's new book Escape from Tibet', available from March 29, 2012..

23 Feb 2015: If the answer is ‘yes’ this can only be because P ′ gets into a new,artificial loop of the kind not experienced by P.

15 Oct 2015: Show that G is a tree if and only if theaddition of any edge to G produces exactly 1 new cycle.

8 Dec 2015: jk by deforming the embedding ei does not create new intersection points.

7 Mar 2015: Itherefore find a new pair of primes and announce that I shall be using the Rabin code with modulusN′ > N. ... Alice uses the Elgamal signature scheme to sign a sequence of messages, incrementing the value ofk by 2 for each new message.

29 Nov 2015: I’d never thought of coding tricks as many-onereductions (that is Chiodo’s idea) but one learns something new every day.

22 Jan 2015: Find an injective function h on (0,) such that, writ-ing ψ = h(θ), the maximum likelihood estimator ψ̂ of the new parameter ψ isunbiased.

23 Dec 2015: 3. The action of diffeomorphisms. If f : M M is a diffeomorphism and ξ isa stable framing, we obtain a new stable framing fξ by. ... Similarly, if ζ = (E,b) is a stable almost complex structure, we obtain a new onefζ = (fE,fb) where fb is given by.

25 Feb 2015: A new code is formed by adding a single parity check bit to the end of the Hamming code, showthat this is linear and repeat the exercise above for this code.

19 Feb 2015: A new code is formed by adding a single parity check bit to the end of the Hamming code, showthat this is linear and repeat the exercise above for this code.