Invertibility / singularity of matrix resulting from a symmetric(0,1) matrix pointwise multiplicated with a vector (consisting of a,b)+identity matrix

fixed-effect model matrix is rank deficient so dropping 27 columns / coefficients AND boundary (singular)

Singular in MuMIn::dredge

Comparing mixed models: singular fit for random effect group but only in some models. Should I drop RE group from all models or just where singular?

Double numerical integration in Matlab - Singularity

Problems with bimodal variable: lmers give boundary is singular, inverse gaussian glmers?

Multilevel model using glmer: Singularity issue

Problem on numerical solution of y'=y^2+1

how to make a matrix invertible for sure, in R

despite singular.ok = FALSE, lm() reports a result while solve(t(X) %*% X) %*% (t(X) %*% y) reports (correctly) an error

Boundary (singular) fit in lmer

ODE boundary value problem with singularities

Search for plural words in line and make it singular words

Linear regression with near singular matrix inversion

Sequelize : Scope with where condition not working with singular and plural

How to apply the colamd algorithm on a sparse matrix in python?

Computationally singular matrix inverse error?

Visreg for GLM in R: singular matrix 'a' in 'solve' Error message

How to calculate running slope for rlm using runner?

OpenModelica trivial mechanical system structurally singular

What causes the singular matrix error in kernel ridge regression and how to fix it?

How to solve numerically a nonlinear ODE (a BVP) with singular points in python?

Rebalancing portfolio creates a Singular Matrix

How can I estimate a latent class model with individual-specific parameters in R?

Need a Python program Singular to Plural

My angular service loses state across different components

system is computationally singular error from linearHypothesis but the matrix has maximal rank

Instability of nonlinear mixed effects (using nlme package) in R

Using observation level random effect to model overdispersion in count data and getting singular fit warning

'singular gradient' error when producing von Bertalanffy growth model using the nls() function

singularity issue in mlogit model when model contains interaction

Removing variables resulting in singular matrix in R regression model

Why singularity error in DCE Random Parameters model - mlogit - due to opt-out/no buy?

Python- trying to understand plural vs singular in code. For example: for i, square in enumerate(squares):

How to Avoid Singular Matrix using R?