To be fair, a lot of office jobs (in Prague at least) are 9-17, or 8-16. Unless you meant government offices, which do open earlier with standart 8(7.5)hr shift

Technical debt; qt update in not a business priority and therefore not included in the KPIs

smspva.com and onlinesim.io

Czechia, unlimited calls, texts and data. Data speed capped at 10mbit/s (1.25 MB) for 500 CZK/month (~20€). Unlimited data speed is about twice the price. Vodafone

Close to 100%, I only don’t call back the numbers my phone automatically labels as spam/fraud.

I misunderstood a little, I assumed a function graph, which could be R^n space. But for the graph-theory-graphs (sets of vertices and edges) it’s similar, you can model the graph using adjacency matrix (NxN matrix for a graph of N vertices, where the vertices ‘mapped’ to a row and column by index. Usually consisting of real numbers representing distance between the “row” and “column” node) and look at it from the linear algebra point of view. That allows to model some characteristics of the graph. But honestly I haven’t mixed these two fields of maths much, so I hope what I wrote is somewhat understandable.

Graphs don’t have vectors, spaces do. A space is just an n-dimensional “graph”. Vectors written in columns next to each other are matrices. Matrices can describe transformation of space, and if the transformation is linear (straight lines stay straight) there will be some vectors that stay the same (unaffected by the transformation). These are called eigenvectors.