Answer:
Each conservation law of a given partial differential equation is determined (up to equivalence) by a function known as the characteristic. This function is used to find conservation laws, to prove equivalence between conservation laws, and to prove the converse of Noether's Theorem.
Explanation:
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the first option
because a thesis is basically a hypothesis
Answer: War and working
Explanation: People in the past used to be about them in the war and about fighting for rights. Other people would be working hard and building things. Like cars, light, telephones. even before the war, we still helped each other.
Hope this helps^^
You should include opinions that contradict your own, and attempt to say why those opinions are invalid based on your own argument.
