Mathematical equations, complex formulas, chalkboard, professor, deep learning architectures, neural networks, layers, neurons, activation functions, backpropagation, gradient descent, optimization algorithms, GPU acceleration, matrix operations, tensor computations, convolutional layers, recurrent layers, batch normalization, dropout regularization, pooling layers, fully connected layers, data flow graphs, computational graphs, abstract representations, futuristic laboratory, sci-fi ambiance, neon lights, metallic surfaces, holographic projections, 3D visualizations.