People here seem to have a problem in understanding set inclusion.
The problem isn't most of us not understanding what LEDs are nor how basic set theory works. The problem seems to be you trying to interweave a poorly constructed semantic argument with a particular type of circuit theory.
I'll leave the circuit theory to others such as
switchabl who seems to be more familiar with nonlinear network theory than I am. If we're going to have a discussion about memristors and the theory that posits them, that should be another thread. It actually might be an interesting topic, but not an uncontroversial one from what I've read. If anyone has a copy of or link to Chua's original paper, I'd like to see it as I haven't found it outside of a paywall.
Your semantic argument here seems to be that if you describe something using an adjective and a noun, then what you are describing is automatically a member or subset of the set of things described by the noun alone. This is quite foolish and not how the English language works. It is fairly common to describe things using an adjective/noun combination that is inherently oxymoronic. Non-dairy milk, vegan hamburger, etc. Whether these specific things are to be included in the larger set depends on the precise nature of what you are describing and the definition of the set, not just word combinations.
If you have a silver Rolex, a gold Rolex and an old Rolex, they are all members of the set Rolex. However, does that mean that a fake Rolex is a Rolex?
Is a Gunn diode a diode? Define diode first, then look up what a Gunn diode is and decide.
The typical, ordinary definition of a resistor is a device that obeys Ohms law, IOW has a nominally linear V/I plot that goes through 0,0. Thus the term "non-linear resistor" is oxymoronic using this definition and we would not include it in the set. If you redefine the term 'resistor' to mean something other than what I've stated, then perhaps your definition can include LEDs and so forth. As many have told you already, most of us would find this inclusion to be unhelpful. This is not to due to stupidity or some great educational lacuna so please get over yourself and your pseud-iconoclast act.
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