Neural network with unbounded activation functions is universal approximator

Mathematics

• Ridgelets 100%
• Activation Function 71%
• Back Propagation 60%
• Neural Networks 56%
• Admissibility 44%
• Transform 44%
• Approximation Property 41%
• Universal Approximation 30%
• Unit 27%
• Radon Transform 24%
• Slice 21%
• Filtering 20%
• Learning 18%
• Filter 17%
• Imply 12%
• Numerical Examples 12%
• Standards 11%
• Theorem 8%

Engineering & Materials Science

• Radon 76%
• Backpropagation 56%
• Chemical activation 53%
• Neural networks 36%
• Deep learning 26%