Ittay Weiss

Portsmouth, United Kingdom

http://www2.port.ac.uk/department-of-mathematics/staff/dr-ittay-weiss.html

I'm a Senior Lecturer in Mathematics at the University of Portsmouth.

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a subclass of quasi metric spaces with properties almost identical to metric spaces

general-topology metric-spaces terminology uniform-spaces asked Jul 4, 2013 at 3:46

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21 votes

do the uniformly continuous functions to the reals determine the uniformity?

general-topology uniform-continuity uniform-spaces quasi-uniform-spaces asked Oct 29, 2015 at 0:47

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15 votes

which exact integration techniques belong in a first year calculus/analysis course?

soft-question big-list teaching asked Jan 31, 2014 at 22:54

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13 votes

compact-open metrizability

general-topology metric-spaces asked Nov 19, 2012 at 8:15

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13 votes

Cauchy filters in metric spaces

general-topology metric-spaces filters asked May 25, 2013 at 6:05

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13 votes

pseudo-inverse to the operation of turning a metric space into a topological space

general-topology category-theory metric-spaces asked Nov 16, 2012 at 9:32

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12 votes

Different ways to come up with $1+2+3+\cdots +n=\frac{n(n+1)}{2}$

integration summation education telescopic-series asked Jan 20, 2017 at 22:27

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9 votes

non-symmetric version of compact = totally bounded + complete

general-topology metric-spaces compactness uniform-spaces asked Jan 13, 2015 at 0:03

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9 votes

convergence of nets vs. convergence of really long sequences

general-topology convergence continuity asked Nov 8, 2012 at 4:48

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8 votes

metric characterization for connectedness

general-topology metric-spaces connectedness asked Nov 1, 2014 at 6:18

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Top Answers

271

Is mathematics one big tautology?

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211

My sister absolutely refuses to learn math

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174

What is category theory useful for?

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147

What does it mean to have a determinant equal to zero?

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111

Trying to define $\mathbb{R}^{0.5}$ topologically

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What is the arithmetic mean of no numbers?

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Are all prime numbers finite?

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Why don't we define "imaginary" numbers for every "impossibility"?

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What is mathematical research like?

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Are there contradictions in math?

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Are there any situations in which L'Hopital's Rule WILL NOT work?

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Empty intersection and empty union

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Results that came out of nowhere.

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Differences between the Borel measure and Lebesgue measure

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Metric assuming the value infinity

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Can it happen that the image of a functor is not a category?

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What is the length of a point on the real number line?

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What does proving the Riemann Hypothesis accomplish?

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Whence the "everything is linear" phenomenon, and what can we do about it?

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Do we really need reals?

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Why does the harmonic series diverge but the p-harmonic series converge

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Do groups, rings and fields have practical applications in CS? If so, what are some?

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Can one prove by contraposition in intuitionistic logic?

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Intuition for the Cauchy-Schwarz inequality

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What is the purpose of showing some numbers exist?

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In plain language, what's the difference between two things that are 'equivalent', 'equal', and 'identical'?

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What do you say to students who want to apply Banach-Tarski theorem in practice?

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Is this number rational?

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Is 1+1 =2 a theorem?

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Surprisingly elementary and direct proofs

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