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L'Olimpo

Stefano's digital house: a mixed blog of IT, coding, tutorials and thoughts

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Category: Programming

FEniCS differences between Function, TrialFunction and TestFunction

6 February 202016 March 2022

The FEniCS project allows for simple solution of partial differential equations. However, getting started from examples is so quick, it is easy to miss how the inner-workings of it behave.…

Brute force a crackme file password with Python

13 February 20188 January 2020

I was to reverse a file for a challenge, MD5 hash 85c9feed0cb0f240a62b1e50d1ab0419. The challenge was called mio cuggino, purposefully misspelled with two g letters. It asks for three numbers. The…

Does C++ delete operator really free memory?

20 September 201714 January 2020

Well, I have been wondering about this for quite a while now, and I have tried to run some tests to better understand what’s going on under the hood. The…

WordPress function url_to_postid not working with Anspress

23 January 201723 January 2017

With the Anspress theme/plugin, using the WordPress native function url_to_postid() on a question permalink returns the page ID of the base page. For example, url_to_postid( “www.website.com/questions/question/this-is-the-question”); would return the page…

A method for calculating pattern relevance in a text

6 February 201625 October 2018

This article aims at presenting a method for computing the relevance of a given string (pattern) in a text. This algorithm is at the core of my WordPress plugin Smart…

Tutorial: Use PayPal Adaptive Payments API (with Embedded Lightbox)

20 February 20137 December 2016

There are two things I am currently working on: School Integrating my Post Pay Counter WordPress plugin with PayPal, so that site administrators can pay their writers directly from their…

When you start a new project, think big!

3 April 201229 April 2012

As you may know, I am the happy developer of a WordPress plugin called Post Pay Counter. I dare say that that has been my first serious coding project, well…

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RSS Quick Math Intuitions

  • Projection methods in linear algebra numerics
  • Reproducing a transport instability in convection-diffusion equation
  • What is the Rossby number?
  • How do Dirichlet and Neumann boundary conditions affect Finite Element Methods variational formulations?
  • A gentle (and short) introduction to Gröbner Bases
  • What is the difference between Finite Differences and Finite Element Methods?
  • The role of intuitions in mathematics
  • A note on the hopes for Fully Homomorphic Signatures
  • Probability as a measure of ignorance
  • But WHY is the Lattices Bounded Distance Decoding Problem difficult?

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Smart Tag Insert
Posts To-Do List
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