# Tagged Questions

Ordinary or partial differential equations. Delay differential equations, neutral equations, integro-differential equations. Well-posedness, asymptotic behavior, and related questions.

**-4**

**1**answer

### Hamiltonian functions [on hold]

**1**

**0**answers

### Locally Lipschitz sufficiently implies a Gronwall inequality?

**2**

**3**answers

### Complex differential equations

**1**

**1**answer

### Solve nonlinear equation

**0**

**0**answers

### Stability of an equilibrium for a third order control system with an integral regulator limited by the stop-type element

**-3**

**0**answers

### Transform a function with a homothecy [closed]

**1**

**1**answer

### Does stability of equilibrium point preserved by permutation matrix (symmetry)?

**0**

**1**answer

### Galerkin Finite element for solving third order time dependent partial differential equation inti weak form

**1**

**2**answers

### One inequality connected with the linear second order ODE

**5**

**0**answers

### Algebraic independence of limit cycles of Lienard equation

**0**

**0**answers

### What is the unitary $1$-parameter group generated by a vector field on a manifold?

**0**

**0**answers

### Euler-Lagrange Equation for system with holonomic constraints

**6**

**1**answer

### Ordinary differential operators satisfying braid relation?

**1**

**0**answers

### Mean of a periodic velocity field and trajectory displacement bound

**16**

**1**answer

### Differential equation changing sign almost everywhere

**3**

**1**answer

### Spectral decomposition of a specific operator

**10**

**0**answers

### Is the $\hat{A}$-genus invariant under crepant birational maps between smooth algebraic varieties?

**6**

**1**answer

### (In)stability of a two-dimensional dynamical system

**2**

**0**answers

### A question about whether an operator can be lipschitz or not

**1**

**0**answers

### 2nd oder evolution equations and regularity results of their solution

**1**

**1**answer

### Behaviour of solutions to $(A-r)f=0$ in the limit $r \to \infty$

**1**

**1**answer

### Classification of a system of two second order PDEs with two dependent and two independent variables

**1**

**1**answer

### Positive Solutions of second-order ODE

**1**

**0**answers

### Well-posedness for a general linear grad-div PDE

**0**

**1**answer

### Well-posedness for equations of the form $u_t = grad[V(u)]$ and $u_{tt}=grad[V(u)]$?

**6**

**0**answers

### Conditions to the existence of periodic orbits of non vanishing vector fields on $\mathbb{T}^2$

**3**

**0**answers

### Parametrix of external product of elliptic operators

**10**

**0**answers

### Witt's proof of Gelfand-Mazur / Ostrowski's Theorem

**1**

**0**answers

### Reference for numerical solutions for differential equations like $f'(x)=f(x+1)+f(x-1)$

**7**

**2**answers

### Generating function of $SO(N)$ random matrix

**3**

**0**answers

### If the sum of everywhere linearly independent vector fields are periodic, are the component vector fields periodic?

**3**

**2**answers

### Are there vector fields which are gradients with respect to one metric but not another? [closed]

**-1**

**1**answer

### explicit answer of and initial condition ODE with delta input

**4**

**1**answer

### Which utility functions are linearly transformed by normal perturbations?

**7**

**0**answers

### An upper bound for the solution of an integro-differential equation

**0**

**0**answers

### Caratheodory Differential Equations ( Existence of Solution )

**0**

**0**answers

### Change of polynomial eigenvalues between polynomials

**0**

**0**answers

### Reference for Existence and uniqueness of an Integro-Differential Equation

**0**

**0**answers

### Perturbed trajectory of non-autonomous ode

**0**

**1**answer

### On the (qualitative) behavior of a coupled differential equation

**0**

**1**answer

### Continuity of the differential flow under a perturbation of the vector field

**1**

**1**answer

### Asymptotic behavior of a solution of an ODE

**2**

**1**answer

### A nodal theorem in 1D

**2**

**0**answers

### Lemma 4.5.1 on page 77 in the book Averaging Methods in Nonlinear Dynamical Systems

**3**

**2**answers

### Perturbed behavior of a differential equation

**2**

**0**answers

### Stability of ODEs with exponentials in the vector field

**4**

**1**answer

### Is there a Feynman-Kac formula for vector-valued Schrödinger operators?

**3**

**0**answers

### Generalized viscosity sub(super)solution and it's convolution

**4**

**1**answer

### Convolution of viscosity solutions and subharmonic functions

**2**

**0**answers