Therefore, at most three coexistence equilibria are observed when ASS exist: one is an unstable equilibrium and the other two are stable ones (stable equilibrium point or stable periodic orbits; [11]-[13]).
The second corollary is on the tan−1 transformation which will turn possibly unstable series into stable ones.
The fabric of that safety net is the notion of spreading risk between leveraged institutions and financially stable ones.
The countries doing the selling are some of the world's poorest and least stable ones: Sudan, Ethiopia, Congo, Pakistan.
The treatment of slaves in expansive, dynamic societies was likely to be worse than in more stable ones.
This is a democracy, one of the more stable ones in Africa, but voting here is frequently marred by electoral peculiarities and outright pugnacity.
Professor Heckman pointed to research showing that moving children from bad home environments to more loving and stable ones improves their cognitive performance and emotional health.
Now the nation's leaders are facing a set of challenges that would stymie any government, even the richest and most stable ones.
In particular, as William Amos, one of Ms Acevedo-Whitehouse's colleagues, points out, levels of inbreeding tend to be lower in expanding populations than in stable ones.
Mr Fukuyama's most recent work concerns the wide variety of human political orders, the difficulty of maintaining stable ones, and the extraordinarily fragile balance between top-down and bottom-up power required to sustain liberal democracies.
By 2025, there will be twice as many poor people in fragile states - sometimes called FRACAS, or fragile and conflict-affected states - as in the much larger group of stable ones.
