Wikipedia:Reference desk/Archives/Mathematics/February 2010

= February 1 = Reference_desk/Archives/Mathematics/2010 February 1


 * 1) What's the standard of proof to tell if an operation on a vector yields a vector?
 * 2) square root of x equals negative one
 * 3) What is the rate of data input on a wiki article over time?
 * 4) Closed subspace
 * 5) are there inaccessible integers?
 * 6) Derivation of volume of a pyramid
 * 7) What are the formulas for a Mercator Projection?
 * 8) Capacitance between 3 concentric spherical shell capacitors

= February 2 = Reference_desk/Archives/Mathematics/2010 February 2


 * 1) Asymptotics of Euler Numbers
 * 2) P-value: What is the connection between significance level of 5% and likelihood of 30%
 * 3) Comparing vectors
 * 4) Units Problem

= February 3 = Reference_desk/Archives/Mathematics/2010 February 3


 * 1) Transcendental Galois extension
 * 2) Smooth maps
 * 3) Induction
 * 4) Winning eight games out of ten
 * 5) distance of a hyperplane from the origin and the norm
 * 6) Discrete Mathematics: Do quantifier orders matter?
 * 7) Homoeomeric curves
 * 8) Clarification on 'Electric Potential Energy' article

= February 4 = Reference_desk/Archives/Mathematics/2010 February 4


 * 1) Scientific Notation
 * 2) Statistics course (titled Stochastic processes)
 * 3) Really simple algebra problem.
 * 4) Plane sections of an ellipsoid
 * 5) Fisher information for dependent variables
 * 6) Standard deviation
 * 7) Question

= February 5 = Reference_desk/Archives/Mathematics/2010 February 5


 * 1) abs(X) < 1
 * 2) How to know if a sequence is an arithmetic progression given the formula for its nth term
 * 3) Marks out of ten
 * 4) Undefined terms in propositional logic
 * 5) Speed and Time problem

= February 6 = Reference_desk/Archives/Mathematics/2010 February 6


 * 1) Complex integral with respect to conjugate
 * 2) Yotoplex?
 * 3) modulo operation
 * 4) Probability of each outcome when rolling 3 dice

= February 7 = Reference_desk/Archives/Mathematics/2010 February 7


 * 1) Peano form and divided differences / mean value theorem
 * 2) Circumcircles, Triangles and Similarity
 * 3) Alpha function?
 * 4) Sets containing themselves

= February 8 = Reference_desk/Archives/Mathematics/2010 February 8


 * 1) c / d = c + d ; slove for c.  Too simple, right????
 * 2) Mohamed Altoumaimi
 * 3) One-to-one and differentiable function

= February 9 = Reference_desk/Archives/Mathematics/2010 February 9


 * 1) math lessons website
 * 2) Male/Female ratio problem
 * 3) Second integral in calculus

= February 10 = Reference_desk/Archives/Mathematics/2010 February 10


 * 1) Uniform minimum variance unbiased estimator
 * 2) Wiki div operator
 * 3) Maximum cardinality of a distributive lattice of length n
 * 4) Limits of periodic functions at Infinity
 * 5) 9999 sticks and a triangle
 * 6) postulate of construction of angles

= February 11 = Reference_desk/Archives/Mathematics/2010 February 11


 * 1) Name that series
 * 2) linear programming
 * 3) Symmetry groups
 * 4) Summing a series
 * 5) Variability of taylor expansions in the complex plane under different branch-cuts
 * 6) euromillions lotto rollover

= February 12 = Reference_desk/Archives/Mathematics/2010 February 12


 * 1) Definition of Fundamental Domain from MathWorld--correct?
 * 2) Integration of square root in the complex plane
 * 3) Stats resources/texts
 * 4) Integer closure under addition
 * 5) 0.18, 9.45, and 0.38 estimation

= February 13 = Reference_desk/Archives/Mathematics/2010 February 13


 * 1) linear programming
 * 2) Lottery

= February 14 = Reference_desk/Archives/Mathematics/2010 February 14


 * 1) Integration
 * 2) Sum of all combinations of n

= February 15 = Reference_desk/Archives/Mathematics/2010 February 15


 * 1) Definition of $sqrt{-1}$
 * 2) What's the name for the argument of the logarithmic function?

= February 16 = Reference_desk/Archives/Mathematics/2010 February 16


 * 1) Round 0.45 or 0.49  or 0.50
 * 2) Cauchy Sequence Ring and Null Sequences - Square root of 2
 * 3) Solving sin(x^2)
 * 4) Sum of reciprocals of cubics
 * 5) What's the name for a holomorphic function (e.g. a logarithmic function) not included in any other holomorphic function?
 * 6) Sobbmub (talk) 15:47, 16 February 2010 (UTC)How can we solve it?Method please
 * 7) math conversion
 * 8) Least squares and oscillating solutions
 * 9) Mathmatical formula for infinity symbol
 * 10) Alternate Law of Cosines
 * 11) One last question on principal ideals
 * 12) LaTeX question, columns

= February 17 = Reference_desk/Archives/Mathematics/2010 February 17


 * 1) Proof for this example on the Lambert W function?
 * 2) Follow up: the name for the argument of the logarithmic function
 * 3) First/second order languages
 * 4) Homomorphism
 * 5) Ominus
 * 6) Spherical harmonic functions
 * 7) math conversion two
 * 8) Minkowski paper on L1 distance
 * 9) LaTeX matrices
 * 10) Integral of 1/x
 * 11) Consistency of arithmetic Mod N

= February 18 = Reference_desk/Archives/Mathematics/2010 February 18


 * 1) Standard Deviation and Semi-Interquartile Range
 * 2) Alternation Operator

= February 20 = Reference_desk/Archives/Mathematics/2010 February 20


 * 1) Sinusoidal function of time
 * 2) Pi
 * 3) Composite number
 * 4) Getting to the South Pole
 * 5) Complex Radius of Convergence
 * 6) Probability Question
 * 7) Exhaust sound

= February 21 = Reference_desk/Archives/Mathematics/2010 February 21


 * 1) How to find the domain and range of this function?
 * 2) Integration
 * 3) Schlafli symbol
 * 4) are there any free & meritorious statistics lessons/courses to be found online?
 * 5) name of method for generating a circular path in x, y plane

= February 22 = Reference_desk/Archives/Mathematics/2010 February 22


 * 1) Modal logic
 * 2) What more do we need to know in order to Identify a function
 * 3) Centre of a group algebra
 * 4) Math Help

= February 23 = Reference_desk/Archives/Mathematics/2010 February 23


 * 1) 98765321 / 1233456789
 * 2) Inversion in a Galois Field
 * 3) Bijection
 * 4) Exponential function
 * 5) Square roots
 * 6) Integration
 * 7) Digit by digit root calculation

= February 24 = Reference_desk/Archives/Mathematics/2010 February 24


 * 1) The hardest Math question
 * 2) multivariable simultaneous algebra
 * 3) Squares and cubes
 * 4) "Groundfield"
 * 5) what is with #9?
 * 6) Seperation of simultanious speech signals
 * 7) what we call number 2?
 * 8) is there a statistical difference between these data sets?

= February 25 = Reference_desk/Archives/Mathematics/2010 February 25


 * 1) Expressing solution of a cubic in radicals
 * 2) Involving Euclidean algorithm for polynomials

= February 26 = Reference_desk/Archives/Mathematics/2010 February 26


 * 1) Mathematics: Complex Numbers and the Mandelbrot Set

= February 27 = Reference_desk/Archives/Mathematics/2010 February 27


 * 1) Feedback help?
 * 2) Multiplication of a random variable
 * 3) What do I need to learn...

= February 28 = Reference_desk/Archives/Mathematics/2010 February 28


 * 1) Explicit Euler's Method
 * 2) How to qualify $log (x^n) = n log x $ when n is even
 * 3) Difference between Needleman-Wunsch and Smith-Waterman
 * 4) Hermitian Matrices
 * 5) Methods of making vectors for data