# Archives

### Dolfin-x: An upgraded version of Dolfin

FEniCSx is the new version of FEniCS that is currently actively developed. Dolfin-x is the computational environment of FEniCS and implements the FEniCS problem-solving environment in Python and C++. New features in Dolfin-x in addition to existing features of Dolfin include: Variational formulations with complex numbers support Support for quadrilateral and hexahedral elements Higher-order […]

### Calculus with Sympy

Sympy is a python package through which we can perform calculus operations in mathematics like differentiation, integration, limits, infinite series, and so on. It is a python library used mainly for symbolic mathematics. The installation of this library is simple by using the following command: pip install sympy In order to write any symbolic expressions, […]

### Obtaining volume, centre of gravity and inertia matrix from STL file

In order to get the details about the volume, centre of gravity and inertia matrix from the STL file of the geometry, we use the numpy-stl python library. It is an efficient and simple library to make work with STL files. The installation of this library is done using command:pip install numpy-stlAfter installing this package, […]

### Vector and Matrix Operations in PETSc (via petsc4py)

Through this post, you will learn how to do basic vector and matrix operations through petsc4py and how to solve a small linear problem using petsc4py. In addition, FEniCS PETSc formats and conversions are also briefly mentioned.

### Practice problems for coding

Anything that has not been tried before seems a nightmare to start, may be that can be said for the coding as well. But, one has to start at some point and possibly this can be a good time to do so; here we will be discussing about two of the very standard yet simple […]

### Understanding loops in Python

Patterns can be printed in python using simple for loops. The firstÂ outer loop is used to handle number of rows and the Inner nested loop is used to handle the number of columns. Manipulating the print statements, different number patterns, alphabet patterns or star patterns can be printed. By printing different patterns, you can build […]