What is a linear system in signals and systems?

Related questions

1. What is causal system and Noncausal system?
2. What are the conditions for a system to be LTI system?
3. Why is impulse response important?
4. What is 2nd order system?
5. What is signal in communication system?
6. What is convolution in signal and systems?
7. What does it mean for a system to be causal?
8. What makes a system LTI?
9. When a system is said to be stable?
10. What is transient response of a control system?

Tags

1. #summations
2. #consists
3. #linear
4. #input
5. #times
6. #shift
7. #scaled
8. #signals
9. #linearity
10. #operations
11. #shifted
12. #defined
13. #causality
14. #system
15. #completely
16. #scaling
17. #values
18. #causal
19. #output
20. #signal