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dd

This entry links every published equation using this exact notation. Its meaning may change between equations.

Meanings in context

Used in 100 equations

dx(t)dt=−[1τ+f(x(t),I(t),t,θ)]⊙x(t)+f(x(t),I(t),t,θ)⊙A,\frac{d\mathbf{x}(t)}{dt} = -\left[\frac{1}{\tau} + f(\mathbf{x}(t),\mathbf{I}(t),t,\theta)\right]\odot \mathbf{x}(t) + f(\mathbf{x}(t),\mathbf{I}(t),t,\theta)\odot A ,

Every Test Changed the Scene and Kept the Chair Red · Equation 1

This equation states an equality: the expressions on both sides have the same value under the article’s assumptions.

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∣ddτln⁡ ⁣[⟨H(τ)⟩−E0(τ)]∣≪2[⟨H(τ)⟩−E0(τ)]πℏ.\left|\frac{d}{d\tau}\ln\!\left[\langle H(\tau)\rangle - E_0(\tau)\right]\right| \ll \frac{2\left[\langle H(\tau)\rangle-E_0(\tau)\right]}{\pi\hbar}.

A Horizon Is a Toll Booth, Not a Loophole · Equation 37

This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.

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