Open System

Open System

Home
Notes
Archive
About
Talking about Science: 1 Boys and Frogs
“Though boys throw stones at frogs in sport, the frogs do not die in sport, but in earnest”
May 10, 2025 • Arkadiusz Jadczyk
Kronecker generalized deltas and Levi-Civita epsilons
My last post “It’s all about permutations” was a complete failure.
Jan 9 • Arkadiusz Jadczyk
It's all about permutations
Permutations appear whenever “things are the same, but in a different order.” That simple idea hides a powerful engine that underlies physics, geometry…
Dec 28, 2025 • Arkadiusz Jadczyk
Biolocation
On Tuesday, December 23, Vlad Zhigalov (see e.g.
Dec 27, 2025 • Arkadiusz Jadczyk
Densities
On my math blog:
Dec 21, 2025 • Arkadiusz Jadczyk
Tensors on a picnic
Gentle introduction
Dec 14, 2025 • Arkadiusz Jadczyk
Geometric objects
Turtle made a step
Dec 11, 2025 • Arkadiusz Jadczyk
Journey Through Blogging Fields
From Salon24 to WordPress—In Search of Math, Meaning, and the Universal Mind
Dec 1, 2025 • Arkadiusz Jadczyk
Open System
Open System
The personal Substack of Arkadiusz Jadczyk, PhD.
Recommendations
View all 9
Language with Chu
Language with Chu
Juliana Barembuem
Postcards From Barsoom
Postcards From Barsoom
John Carter
Political Ponerology
Political Ponerology
Harrison Koehli
Kasiopejski eksperiment
Kasiopejski eksperiment
The Cassiopaea Experiment
LucTalks
LucTalks
L.P. Koch

Open System

AboutArchiveRecommendationsSitemap
© 2026 Arkadiusz Jadczyk · Privacy ∙ Terms ∙ Collection notice
Start your SubstackGet the app
Substack is the home for great culture