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Help me decipher the What does equation given belowin the "related work" section of the GAN paper mean?

I was going through the paper on GAN by Ian Goodfellow. Under the related work section, there is an equation. I cannot decipher the equation. Can anyone help me understand the meaning of the equation?

$$\lim_{\sigma \to 0} \nabla_{\mathbf x} \mathbb E_{\epsilon \sim \mathcal N(0, \sigma^2 \mathbf I)} f(\mathbf x+\epsilon) = \nabla_x f(\mathbf x)$$

Also, any guide to understanding mathematical notation for reading research paper areis highly appreciated.

$$\lim_{\sigma \to 0} \nabla_{\mathbf x} \mathbb E_{\epsilon \sim \mathcal N(0, \sigma^2 \mathbf I)} f(\mathbf x+\epsilon) = \nabla_x f(\mathbf x)$$

Help me decipher the equation given below

I was going through the paper on GAN by Ian Goodfellow. Under the related work section, there is an equation. I cannot decipher the equation. Can anyone help me understand the meaning of the equation? Also, any guide to understanding mathematical notation for reading research paper are highly appreciated.

$$\lim_{\sigma \to 0} \nabla_{\mathbf x} \mathbb E_{\epsilon \sim \mathcal N(0, \sigma^2 \mathbf I)} f(\mathbf x+\epsilon) = \nabla_x f(\mathbf x)$$

What does equation in the "related work" section of the GAN paper mean?

I was going through the paper on GAN by Ian Goodfellow. Under the related work section, there is an equation. I cannot decipher the equation. Can anyone help me understand the meaning of the equation?

$$\lim_{\sigma \to 0} \nabla_{\mathbf x} \mathbb E_{\epsilon \sim \mathcal N(0, \sigma^2 \mathbf I)} f(\mathbf x+\epsilon) = \nabla_x f(\mathbf x)$$

Also, any guide to understanding mathematical notation for reading research paper is highly appreciated.

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I was going through the paperpaper on GAN by Ian Goodfellow. Under the Relatedrelated work section, there is an equation(given in the image below),. I cannot decipher the equation. Can anyone help me understand the meaning of the equation? Also, any guide to understanding mathematical notation for reading research paper are highly appreciated. enter image description here

$$\lim_{\sigma \to 0} \nabla_{\mathbf x} \mathbb E_{\epsilon \sim \mathcal N(0, \sigma^2 \mathbf I)} f(\mathbf x+\epsilon) = \nabla_x f(\mathbf x)$$

I was going through the paper on GAN by Ian Goodfellow. Under the Related work section, there is an equation(given in the image below), I cannot decipher the equation. Can anyone help me understand the meaning of the equation? Also, any guide to understanding mathematical notation for reading research paper are highly appreciated. enter image description here

I was going through the paper on GAN by Ian Goodfellow. Under the related work section, there is an equation. I cannot decipher the equation. Can anyone help me understand the meaning of the equation? Also, any guide to understanding mathematical notation for reading research paper are highly appreciated.

$$\lim_{\sigma \to 0} \nabla_{\mathbf x} \mathbb E_{\epsilon \sim \mathcal N(0, \sigma^2 \mathbf I)} f(\mathbf x+\epsilon) = \nabla_x f(\mathbf x)$$

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Help me decipher the equation given below

I was going through the paper on GAN by Ian Goodfellow. Under the Related work section, there is an equation(given in the image below), I cannot decipher the equation. Can anyone help me understand the meaning of the equation? Also, any guide to understanding mathematical notation for reading research paper are highly appreciated. enter image description here