Kevin Dietrich's user avatar
Kevin Dietrich's user avatar
Kevin Dietrich's user avatar
Kevin Dietrich
  • Member for 1 year, 6 months
  • Last seen this week
  • Germany
7 votes

Have generalisations of dual numbers/complex numbers/quaternions/octonions... been studied?

5 votes
Accepted

Apply Quaternion Rotation to Vector

5 votes
Accepted

Fractional derivative calculator in Mathematical Softwares

5 votes
Accepted

The value of $\ln{(x\ln{(x\ln{(x…)})})}$

4 votes

Exactly one solution of $y'=-xy^{1/3}, y(0)=0$

4 votes

How to solve this ODE: $y^{(y(x))}(x)=f(x)$?

4 votes

How to evaluate this improper integral $\int_{-\infty}^\infty x^2 e^{-x^2}\cos x \, dx$?

3 votes
Accepted

i raised to itself

3 votes

Why study complex numbers in trigonometric form?

3 votes

Is $\ln(-1)$ equal to $\pi i$, undefined, or both?

3 votes

Can one expand $(a + b)^{{i}}$?

3 votes
Accepted

Parametric curves including complex numbers

3 votes

Given a difficult exponential equation such as $x^x+2x=5$ or $x^3=2^x$, can its exact value be solved? Or just the approach?

3 votes

What is known about Pathions, Chingons, Routons and Voudons?

3 votes
Accepted

Factorisation of the sum of $n$ squares using hypercomplex numbers

2 votes
Accepted

Differential equation with memory

2 votes
Accepted

Are there any real analytic functions such that $\sum_{n=1}^{\infty} \frac{1}{f(n)} = \sum_{k=2}^{\infty} f(k) \left( \zeta(k) - 1 \right) $?

2 votes

Ci reflection formula

2 votes

Linear functional equations

2 votes

Is the degree of a differential equation of any use?

2 votes
Accepted

What is the value of $x$ in $x^4+1=0$?

2 votes
Accepted

Solve for complex $x$: $1^x = 2$

2 votes

How to solve the differential equation $dx/dy = x^2 y\,$?

2 votes

How to convert Quaternions into Polar form?

2 votes

What is the half-derivative of zeta at $s=0$ (and how to compute it)?

2 votes

Fractional derivative of exponential function

2 votes

How to calculate sin/cos/tan of a Quaternion?

2 votes

Solve FDE: $f^{(1.5)}(x)=f(x)$

2 votes
Accepted

An explicit form for this differential equation.

2 votes
Accepted

Convert $2^{11/2} e^{(3 \pi/4) i}$ where $ - \pi < \theta \le \pi$