Wikipedia:Reference desk/Archives/Mathematics/April 2011

= April 1 = Reference_desk/Archives/Mathematics/2011 April 1


 * 1) Difficult integration question
 * 2) How to choose substitution function while finding antiderivative by method of substitution
 * 3) Solving by detour
 * 4) Still more Fundamental Theorem of Algebra
 * 5) Math for Social Science

= April 2 = Reference_desk/Archives/Mathematics/2011 April 2


 * 1) Lagrangian problem
 * 2) Isomorphic graphs
 * 3) Rotation of a plane

= April 3 = Reference_desk/Archives/Mathematics/2011 April 3


 * 1) Probability model for rain
 * 2) Hessian determinant for 3 or higher-variate functions

= April 4 = Reference_desk/Archives/Mathematics/2011 April 4


 * 1) Notation
 * 2) Trivial question has me defeated
 * 3) sets of numbers with bounded subsets
 * 4) Stalk
 * 5) Latex resize align*

= April 5 = Reference_desk/Archives/Mathematics/2011 April 5


 * 1) A⊕n
 * 2) BibTex Style File
 * 3) Well-behaved functions with respect to measure
 * 4) Modifying encrypted data without decrypting it
 * 5) Recursive formula
 * 6) Polyhedron whose vertices correspond to unordered pairs

= April 6 = Reference_desk/Archives/Mathematics/2011 April 6


 * 1) Laplace
 * 2) Continuity

= April 7 = Reference_desk/Archives/Mathematics/2011 April 7


 * 1) Pairwise distinct
 * 2) Convergence to zero
 * 3) Graph Ramsey number
 * 4) Curvature
 * 5) More on "triangular graphs"
 * 6) "Straight" line on a curved surface

= April 8 = Reference_desk/Archives/Mathematics/2011 April 8


 * 1) Hysterisis
 * 2) Prime number

= April 9 = Reference_desk/Archives/Mathematics/2011 April 9


 * 1) Limit

= April 10 = Reference_desk/Archives/Mathematics/2011 April 10


 * 1) Differentiation problem
 * 2) Set Theory
 * 3) Very easy maths question
 * 4) Map from z-plane to w-plane
 * 5) integral

= April 11 = Reference_desk/Archives/Mathematics/2011 April 11


 * 1) Why are the imaginary parts of some nontrivial Riemann zeta zeroes so close to integers?
 * 2) Number sequence
 * 3) Game theory

= April 12 = Reference_desk/Archives/Mathematics/2011 April 12


 * 1) Integral formulas
 * 2) Graph factorization
 * 3) Latex problem
 * 4) Ambigious or not?
 * 5) Question about Peano arithmetic

= April 13 = Reference_desk/Archives/Mathematics/2011 April 13


 * 1) Constant (mathematics) vs Mathematical constant
 * 2) Yupana
 * 3) Representation theory - problem understanding lecture notes, request for clarification!
 * 4) Even graph with even edges
 * 5) Parameterisation
 * 6) Self complementary graphs

= April 15 = Reference_desk/Archives/Mathematics/2011 April 15


 * 1) Hawaiian earring
 * 2) lim
 * 3) prime number
 * 4) Exam Question - graph theory
 * 5) mathmatics/trigonomatry
 * 6) Topology Question
 * 7) Polyhedra and topology

= April 16 = Reference_desk/Archives/Mathematics/2011 April 16


 * 1) Reason behind definitions of cross product and dot product
 * 2) Maximal Ideals

= April 17 = Reference_desk/Archives/Mathematics/2011 April 17


 * 1) Sum of powers
 * 2) Lyapunov exponent of a Rossler oscillator
 * 3) (Another!) graph theory question
 * 4) "transverse to a manifold"

= April 18 = Reference_desk/Archives/Mathematics/2011 April 18


 * 1) Constructing an uncountable ordinal using neither axiom of choice NOR replacement
 * 2) Generating values from a multivariate normal distribution
 * 3) Parameterization
 * 4) Counting

= April 19 = Reference_desk/Archives/Mathematics/2011 April 19


 * 1) N(a) prime, then a is irreducible
 * 2) 'Complete' convergence of random variables
 * 3) The significance of the point (0, 1)
 * 4) Yet another form of the tangent half-angle formula

= April 20 = Reference_desk/Archives/Mathematics/2011 April 20


 * 1) Light Years
 * 2) Solving f(t) and g(t) so that application of either always generates a new value

= April 21 = Reference_desk/Archives/Mathematics/2011 April 21


 * 1) about isomorphism between chain groups
 * 2) Contour Integral
 * 3) Number of involutions in groups
 * 4) Integrals and limits
 * 5) Derivatives
 * 6) King's tour

= April 22 = Reference_desk/Archives/Mathematics/2011 April 22


 * 1) Integration by parts for improper integrals
 * 2) Differentiating under the integral sign
 * 3) Weak Nulstellensatz
 * 4) Fourier transform of Schwartz functions
 * 5) Algebraic Topology

= April 23 = Reference_desk/Archives/Mathematics/2011 April 23


 * 1) Log help
 * 2) 0 vector and orthogonality
 * 3) simplicial mapping
 * 4) Minimum Value
 * 5) Smooth functions

= April 24 = Reference_desk/Archives/Mathematics/2011 April 24


 * 1) Group Cohomology
 * 2) Clarification: homework question
 * 3) Homeomorphism
 * 4) Working out loan APR from monthly cost

= April 25 = Reference_desk/Archives/Mathematics/2011 April 25


 * 1) Directed-complete posets
 * 2) Graph Theory doubt
 * 3) Lie algebra
 * 4) The Reality of negative numbers.
 * 5) Hausdorff dimension under the map x -> x^2

= April 26 = Reference_desk/Archives/Mathematics/2011 April 26


 * 1) Integration
 * 2) Showing $ell_p$ is of first category in $ell_r$ for r > p (and a second query on weak convergence)

= April 27 = Reference_desk/Archives/Mathematics/2011 April 27


 * 1) Multiplication problem

= April 28 = Reference_desk/Archives/Mathematics/2011 April 28


 * 1) Help with a question of Limit
 * 2) Arzelà-Ascoli theorem and second order differential equations
 * 3) Maths of the PID Controller algorithm
 * 4) Fibre Bundle Question

= April 29 = Reference_desk/Archives/Mathematics/2011 April 29


 * 1) Calculating presence of root.
 * 2) Dimensions and existence of an inverse
 * 3) Showing 2 shapes are or are not homeomorphic
 * 4) Combinatorial problem
 * 5) Policy Proposition

= April 30 = Reference_desk/Archives/Mathematics/2011 April 30


 * 1) Logistic regression
 * 2) Question on algebraic topology, absolutely no clue where to get started, please help!
 * 3) How do finitists define real numbers?