Numbered houses
The workings As those who have come across set theory at some point know, counting is nothing more than a particular way of establishing a bijection between some set and a special set, such as […]
Month: May 2020
Solution: Numbered houses
Here is the solution to the numbered houses divertimento. The fun The conversation between two mathematicians exchanging home addresses goes as follows: –What is the number of your house? –In my street the houses are numbered […]
When mathematics gives structure to knowledge: the positive philosophy of Auguste Comte
The philosopher Ortega y Gasset said in his work La idea de Principio en Leibniz (written in 1947, but published in 1958) “By 1860 the continuity of the seriously philosophical tradition had been lost, even […]
How does a virus infect us? (II)
In a previous post How does a virus infect us? we briefly described the initial phase of an infection. Our aim in this entry is to present a simple mathematical model that is interesting enough […]
The hypotenuse and romance novels (by L. Sepúlveda)
It seems to me that there are few novels like Un viejo que leía novelas de amor (An Old Man Who Reads Love Novels) to relieve confinement for a while. The adventures of Antonio José […]
Sero-epidemiological survey of coronavirus: preliminary report and some conclusions
The preliminary report of the ENE-COVID19 sero-epidemiological study which has been carried out by the Spanish Department of Science and Innovation and the Spanish Department of Health since 27 April, was published on Wednesday. The […]
What should we not stop doing through mathematics in times of coronavirus?
We are living through the most serious health emergency of the last century, which is beginning to generate a social emergency and an economic crisis whose tremendous severity we have only just begun to grasp. […]
Mathematics and Atomic Structure I
We have devoted several of our previous posts (see here and here, for example) to explain how the attempt to understand certain natural phenomena led physicists and mathematicians in the early 20th century to propose […]
Trapezoids
The workings Last fortnight we proposed to our dear readers a very cheap activity, without much difficulty and that could be done in any home (whether there were stackable cubes or not is another story). […]