Matching Tag: bistable-equations
Consider an ODE of the form of equation with a bistable function f ( y ) f(y) f ( y ) . Five-solution conjecture. Such an ODE has at most five 1 1 1 -periodic solutions. This conjecture concerns the…
Assume that f a ( u ) = u ( 1 − u ) ( u − a ) f_a(u)=u(1-u)(u-a) f a ( u ) = u ( 1 − u ) ( u − a ) with 0 < a < 1 / 2 0<a<1/2 0 < a < 1/2 . Let K \mathcal{K} K satisfy the stated hypotheses with normalized second moment … Let R j \mathcal{R}_j R j , j = 1 , … , 5 j=1,\ldots,5 j = 1 , … , 5 , be the regions…
Assume that K ( x ) = e − ∣ x ∣ / 2 \mathcal{K}(x)=\mathrm{e}^{-|x|}/2 K ( x ) = e − ∣ x ∣ /2 and that f a ( u ) = u ( 1 − u ) ( u − a ) f_a(u)=u(1-u)(u-a) f a ( u ) = u ( 1 − u ) ( u − a ) with 0 < a < 1 / 2 0<a<1/2 0 < a < 1/2 . Let ( a , d ) ∈ R 2 ∪ R 3 (a,d)\in \mathcal{R}_2\cup\mathcal{R}_3 ( a , d ) ∈ R 2 ∪ R 3 such that 0 < ℓ 1 ∗ < ∞ 0<\ell_1^*<\infty 0 < ℓ 1 ∗ < ∞ is well d…