Real borders can be thick. They are not dimensionless lines as typically assumed in theoretical models and standard empirical analyses, but a zone populated by

'It is not a recognized mental illness like agoraphobia or depression ... It's largely a matter of luck whether one suffers from border syndrome: it depends whe

While the pandemic lasts, Latin America and the Caribbean (LAC) will go through a tunnel full of uncertainty. It is not known especially how long it is: how lon

In an increasingly electronic society, these exercises are designed to help school and collegiate educators use historical devices of mathematics to balance the