Considering a kind of neutral delay differential equations, a sufficient condition for the oscillation of all solutions of neutral delay differential equation in critical state is obtained.

讨论了一类中立型时滞微分方程所有解的振动性，获得了临界状态下该方程所有解振动的一个充分条件。

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This paper deals with the existence and nonexistence of solutions for a critical semilinear polyharmonic equation with the second boundary and with a non-negative perturbation.

讨论了带非负扰动并具有第二类边值的临界非齐次多重调和方程的多解存在性和非存在性。

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This paper deals with the existence and nonexistence of solutions for a critical semilinear polyharmonic equation with a non-negative perturbation.

讨论了带非负扰动的临界非齐次多重调和方程多解存在性和非存在性。

youdao

The price of corn is a critical variable in the world food equation, and food markets are on edge because U.S. corn stocks are plummeting due to the ethanol mandate.

FORBES: Feds Could Lessen Drought Impacts But Don't Bet The Farm On It

Awards like the Grammys and the Oscars have always been a balance of critical recognition and popularity contest, but social media has shifted the equation a bit.

FORBES: How To Win The Most Grammys? Social Media Buzz!