Mathematical symbols, equations, and formulas on a blackboard, messy scribbles, chalk dust, modern university lecture hall, professor in the background, Deep Learning architecture diagrams, neural networks, convolutional layers, recurrent layers, fully connected layers, activation functions, backpropagation algorithm, gradient descent, optimization techniques, computational graphs, GPU accelerators, matrix multiplication, vector calculations, data flowcharts, complex geometric shapes, futuristic ambient lighting, cinematic composition, high-tech atmosphere.