Category:Pages with Questionable Content
These are pages containing proofs that are of questionable validity.
See the questionable template.
Pages in category "Pages with Questionable Content"
The following 109 pages are in this category, out of 109 total.
A
B
C
- Cantor-Bernstein-Schröder Theorem
- Cantor-Bernstein-Schröder Theorem/Proof 4
- Cauchy-Goursat Theorem
- Characterization of Lower Semicontinuity
- Definition:Class (Class Theory)
- Class Member of Class Builder
- Definition:Class/Zermelo-Fraenkel
- Closure in Subspace
- Definition:Coefficient of Polynomial
- Compact Hausdorff Topology is Minimal Hausdorff
- Conjunction with Tautology/Proof 1
- Construction of Outer Measure
- Continued Fraction Algorithm
- Continuous Functions on Compact Space form Banach Space
- Continuous Image of Compact Space is Compact/Corollary 3
- Continuous Image of Compact Space is Compact/Corollary 3/Proof 2
- Convergents are Best Approximations
D
E
- Equality implies Substitution
- Equidistance is Independent of Betweenness
- Equivalence of Definitions of Complex Exponential Function
- Equivalence of Definitions of Countable Set
- Equivalence of Definitions of Ordered Pair
- Existence and Uniqueness Theorem for 1st Order IVPs
- Existence of Abscissa of Convergence
- Existence of Positive Root
- Existence of Positive Root/Negative Exponent
- Exponential Tends to Zero and Infinity
F
- Factorial Divides Product of Successive Numbers
- Factors of Integer Congruent to 5 modulo 6
- Fibonacci Number in terms of Larger Fibonacci Numbers
- First Order ODE/y' - f (y) phi' (x) over f' (y) = phi (x) phi' (x) over f' (y)
- Fixed Point of Mappings is Fixed Point of Composition/General Result
- Fourier Series/1 over -1 to 0, Cosine of x over 0 to 1
- Fourier Series/x over 0 to 2, x-2 over 2 to 4
- Fourth Isomorphism Theorem
I
- Definition:Image (Set Theory)/Relation/Element/Singleton
- Definition:Imperial
- Definition:Imperial/Volume
- Integer as Sum of 27 Primes
- Intersection and Sum of Submodules
- Intersection and Sum of Submodules/Corollary
- Interval containing Prime Number of forms 4n - 1, 4n + 1, 6n - 1, 6n + 1
- Definition:Inverse Laplace Transform
L
- Lagrange's Four Square Theorem
- Lagrange's Four Square Theorem/Proof 2
- Definition:Leading Coefficient of Polynomial
- Lebesgue Integral is Extension of Riemann Integral
- Limit at Infinity of Polynomial over Complex Exponential
- Definition:Limit Point/Topology/Set
- Definition:Limit Point/Topology/Set/Definition 5
- Locally Compact iff Open Neighborhood contains Compact Open Neighborhood
- Locally Compact iff Open Neighborhood contains Compact Set
- Logarithm of Infinite Product of Complex Functions/Corollary
- Logarithmic Derivative of Infinite Product of Analytic Functions
- Logical Consequence with Union
M
N
P
- Pair is Union of Singletons
- Power of 2 is Difference between Two Powers
- Power Series Expansion for Exponential of Tangent of x
- Prime Enumeration Function is Primitive Recursive
- Prime Number Theorem
- Primitive of Exponential of a x by Sine of b x/Proof 2
- Primitive of Exponential of a x by Sine of b x/Proof 3
- Primitive of Reciprocal of p plus q by Cosine of a x
- Primitive of Reciprocal of p plus q by Cosine of a x/Proof 2
- Primitive of Reciprocal of Root of x squared minus a squared/Logarithm Form
- Definition:Primitive Recursion/One Variable
- Product of Two Distinct Primes has 4 Positive Divisors
- Proper Subset of Finite Ordinal is Equivalent to Smaller Ordinal
R
S
- Second Derivative of Locus of Cycloid
- Set of all Sets
- Set of Gödel Numbers of Arithmetic Theorems Not Definable in Arithmetic
- Simple Infinite Continued Fraction Converges
- Solution to Legendre's Differential Equation
- Definition:Spanning Subgraph
- Square of Vandermonde Matrix
- Subspace of Real Continuous Functions
- Sufficient Condition for Vector Equals Inverse iff Zero
