MSE publications / references in 2013
In die Beschränkung zeigt sich erst der Meister
(Goethe)

percentage of numbers starting with 2 in {2^{n}}

How to compute [ a certain limit ]

Equivalence of integral and sum

Result of a definite Integral

Determine the stability of (x,y) = (0,0)
Construct a Liapunov function for this system

The intersections of three polygons in a square with area = 6

The inner workings of the Olbers paradox
 Show that [ multiple integral < ∞ ]
 .. from a contest
 Find all permutations in increasing order + MIRROR
 Finding the limit of ..
 How to prove this .. + MIRROR
 Are there any open mathematical puzzles?
 What is the purpose of sets? Why do we use them?
 how to find center/radius of a sphere
 Deriving a relation using the Cauchy Schwarz inequality
 Integral ..
 How many methods to this limit ..
 inequality ..
 How to work out a double summation without manually finding each answer?
 Limit of the integral of ..
 Simple algorithm to get the square of an integer using only addition?
 Is there any simple method to calculate √ 2 without using logarithm
 Outer Unit Normal: Cylinder
 How find this value of x+y+z+u+v+w
 Delta function that obeys inverse square law outside its (1; 1) range and has no 1/0 infinity + MIRROR
 Solving x^{x} = 1/√2
 Evaluate the sum of cubes
 Solving the recurrence T(n) = 2T(n/2) + (n/2)log(n)
 find inscribed ellipses in quads
 Can't solve this problem .. (Without using L'Hospital's rule)
 construct x =ab by using compass alone, if a and b are given segments.
 Finding x+y+z
 Reverse of number (numerical)
 Proof by induction: An equation with binomial coefficients
 Proving the regular ngon maximizes area for fixed perimeter.
 Volume of a sphere with three holes drilled in it.
 prove the general arithmeticgeometric mean inequality
 Proving a condition related to normal on ellipse
 Relationship between solutions of y'''+y=0
 Volume of a cuboid whose diagonal and surface area is known
 What shape is traced out by this animation?
 A generalization of IMO 1983 problem 6
 Fastest curve from p_{0} to p_{1} + MIRROR
 The cheapest offcut carpet to buy for two rooms word problem
 Differential  Aproximation to ΔA (area variation)
 Solid Angle Calculation  Understanding a formula
 solve the ODE I tried all methods
 What is the meaning of infinitesimal?
 How to prove that .. [duplicate]
 Torricelli's Law
 Differential equations solveable independently of coordinate system? + MIRROR
 Polar coordinates differential equation
 [Elementary set theory question]
 Center of Mass of Quadrilateral
 Finding the centroid of a polar curve
 Converting triangles to isosceles, equilateral or right??? + MIRROR
 Decomposable Families of Shapes
 Determine third point of triangle when two points and all sides are known?
 Why are two definitions of ellipses equivalent?
 Why do all *cevians* of a triangle intersect?
 Is there any equation for triangle? + MIRROR
 Help me to solve this recurrence relation for a closed form
 Divergence theorem in spherical coordinates + MIRROR
 Time and Work: pipe and cistern related problem
 How prove this inequality x+y+z=3
 What's the largest possible volume of a taco, and how do I make one that big?
 Proof of [an intersting inequality]
 Conjecture [outcome of a complicated integral]
 Mminimize the integral and obtaining the constants a and b
 Optimisation of a rectangles area under a function curve
 Nature of stability of critical points
 Elaboration of calculus in finitistic maths
 Proving Goldbach's conjecture (hypothetically)
 What is the maximum area of a square inscribed in an equilateral triangle?
 Parametric equation of x^{y} = y^{x} curve
 Understand 1D FEM solution using quadratics elements + MIRROR
 Proving an inequality using the CauchySchwarz inequality
 Find the integer n
 Recurrence Relation.
 Significance of starting the Fibonacci Series with 0,1..
 how do i calculate coordinates of point on rectangle based on angle
 Help with the chain rule h(t)=f(t,X(t))
 How to make sense of this calculus notation, Advanced College Level
 Given a plot of a function f(x) how to find at which points it is differentiable? + MIRROR
 Differentiating second order term of Taylor polynomial (multivariable) + MIRROR
 Commutativity of iterated limits + MIRROR
 Cauchy distribution instead of Coulomb law? + MIRROR
 GaussNewton Method
 Intersection of canal surface with line
 Wolfram not doing sum Fibonacci[k]/k! , k=1 to infinity
 Find the area of a circle that is inscribed in a circular sector with a radius R and an angle 2x .
 Rationalizing radicals
 Finding limit of sin π 3^{x} / x as x → 0
 How find this g(x)=f(x)f(1x) maximum and minimum
 How to differentiate Complex Fluid Potential + MIRROR
 Recurrence sequence limit
 How to define the NablaOperator
 Korea Math Olympiad 1993
 Regular pentagon and tangent lines
 Integral Equation without solution?
 Linear Algebra in curved space
 Value of sum of telescoping series
 NavierStokes equations in tensorial form on a general coordinate system
 Let c : I → R^{3} be a regularly parametrized curve with curvature κ = 0
 Fourier Series Coefficient of a given signal
 solution to a cauchy euler form 2nd order
 Projection of ellipsoid
 How to calculate a trigonometric interpolation polynomial
 Discretisation of ordinary differential equations for a linear filter design.
 What is the derivation of an integral?
 Minimum area of the parallelepiped surface (excellent answer!)
 Finding Polar Area Problem
 Fractional Derivative of a Taylor Series?
 Rationalizing radicals
 To prove the inequality of two positive variables
 How to find this sum [ formula ]
 Should a "good" equation divide the plane?
 Help finding the general solution of a (partial?) differential equation.
 Find Weight for minimum Manhattan Distance
 Why is this is the derivative?
 Limit of a harmonic subseries minus "its" logarithm
 General strategy to solve systems of 4 variables after using lagrange method?
 Determinant of symmetric tridiagonal matrices
 Evaluating a series involving inverse of sinh(nπ)
 What is the focal width of a parabola?
 [ matrix to the power 2013 = ? ]
 Evaluating Double Integral [ triangular section of a sphere ]
 limit for applying of sin operation n times and multiplying the result by square root of n
 How to find this limit [ square root of square root of .. ]
 How to construct longitudinal from transversal waves and vice versa? + MIRROR
 What does it mean being onetoone
 Complete proof derivative with limit
 Differential operators confussion
 Line integrals for a circle
 Linear isoparametrics with dual finite elements + MIRROR
 How can I find the orthogonal trajectories of curves
 Minimum of a sum
 How find the possible eigenvalue of P
 Linear independence of a modified system
 Which formula will calculate values shown in this graph?
 Area of the shaded region
 When do repeated intervals of time overlap?
 Rectangle with coordinates of all vertices Fibonacci numbers
 WaveParticle Duality in PDE?
 [ another difficult limit solved ]
 trace of the matrix I+M+M^2 is
 if [ equation] then prove [ solution]
 Formality and mathematics
 Counting the number of polygons in a figure
 How to prove there exists c such f(c)f'(c)+f"(c)=0
 m be the number of distinct non congruent integer sided triangles each with perimeter 15
 How prove this inequality [ difficult formula ] + MIRROR
 Are systems of equations inherently "more expressible" than single equations?
 Triple Integral with bounds in first octant
 How to find the expresion such that its derivative must meet a certain condition
 How to convert a right angled triangle into a equilateral triangle?
 Find the area enclosed by [ difficult equation ] + LATER
 How to find this limit: A= [ difficult formula ] + MIRROR
 Rectangle with coordinates of all vertices Fibonacci numbers
 Cutting up a circle to make a square
 Does cardinality really have something to do with the number of elements in a infinite set?
 Integrating strips normal to the curve
 Find the area of the region which is the union of three circles
 What type of Math and how to solve (points and distance)
 Iterated Limits Schizophrenia + MIRROR
 Surprising identities / equations
 How to identify surfaces of revolution
 How to determine that a surface is symmetric
 How prove this inequality [ formula, for x+y+z = 1 ]
 A "What's my vector?" game
 Why do odd dimensions and even dimensions behave differently?
 An inequality containing prime numbers.
 (Dis)prove that this system has only integral solutions.
 How find this [ difficult looking surface integral ]
 Unit diameter pentagons with maximum area
 Flow Graphs: Why do you need the symmetry property of a graph?
 Show that there is (a,b) s.t. f_{x}(a,b)^{2} + f_{y}(a,b)^{2} < 4
 max and min xy  ln(x^{2}+y^{2})
 How do I guess an intital step length in a line search (minimization)?
 Leibniz' Law and that good old riddle + MIRROR
 How can triangle inequality be extended to become tetrahedron inequality?
 Defining what a proposition is is in propositional logic
 Find the velocity field of ideal fluid that has a sink strength of 2πk using complex analysis.
 Any clue how to solve this convolution integral?
Mathematics, what else ..