Skip to main content
Notice removed Improve details by CommunityBot
Bounty Ended with no winning answer by CommunityBot
Notice added Improve details by user31317
Bounty Started worth 50 reputation by CommunityBot
added 10 characters in body
Source Link
user31317
user31317

Let $f(x): \mathbb{R}^n \to \mathbb{R}$ be a real-valued twice continuously differentiable function and $n>1$. I define the function $g(x) = f(x) + x^{\top} A x$ where $A$ is random matrix (say entries i.i.d from uniform distribution [-1,1]). Can we say that the Hessian of $g$ is invertible for all $x$ with probability one?

Let $f(x): \mathbb{R}^n \to \mathbb{R}$ be a real-valued twice continuously differentiable function. I define the function $g(x) = f(x) + x^{\top} A x$ where $A$ is random matrix (say entries i.i.d from uniform distribution [-1,1]). Can we say that the Hessian of $g$ is invertible for all $x$ with probability one?

Let $f(x): \mathbb{R}^n \to \mathbb{R}$ be a real-valued twice continuously differentiable function and $n>1$. I define the function $g(x) = f(x) + x^{\top} A x$ where $A$ is random matrix (say entries i.i.d from uniform distribution [-1,1]). Can we say that the Hessian of $g$ is invertible for all $x$ with probability one?

deleted 1 character in body
Source Link
user31317
user31317

Let $f(x): \mathbb{R}^n \to \mathbb{R}$ be a real-valued twice continuously differentiable function. I define the function $f'(x) = f(x) + x^{\top} A x$$g(x) = f(x) + x^{\top} A x$ where $A$ is random matrix (say entries i.i.d from uniform distribution [-1,1]). Can we say that the Hessian of $f$$g$ is invertible for all $x$ with probability one?

Let $f(x): \mathbb{R}^n \to \mathbb{R}$ be a real-valued twice continuously differentiable function. I define the function $f'(x) = f(x) + x^{\top} A x$ where $A$ is random matrix (say entries i.i.d from uniform distribution [-1,1]). Can we say that the Hessian of $f$ is invertible for all $x$ with probability one?

Let $f(x): \mathbb{R}^n \to \mathbb{R}$ be a real-valued twice continuously differentiable function. I define the function $g(x) = f(x) + x^{\top} A x$ where $A$ is random matrix (say entries i.i.d from uniform distribution [-1,1]). Can we say that the Hessian of $g$ is invertible for all $x$ with probability one?

Source Link
user31317
user31317

Question on Hessian of a function (probability question)

Let $f(x): \mathbb{R}^n \to \mathbb{R}$ be a real-valued twice continuously differentiable function. I define the function $f'(x) = f(x) + x^{\top} A x$ where $A$ is random matrix (say entries i.i.d from uniform distribution [-1,1]). Can we say that the Hessian of $f$ is invertible for all $x$ with probability one?