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2. Confused about XORing and addition modulo $2$

   cs.stackexchange.com/questions/41664

   You are confusing operations on a single bit with operations on a byte,or word.(Multiple bits) A single bit represents either 0 or 1 depending on its value. If you add two bits, and ignore the carry, you are adding "mod2". 0+0 = 0 0+1 = 1 1+0 = 1 1+1 overflows, or carries, and you have 0. this is exactly the same as XOR. However it is NOT true ...

3. Grammar for language L on {a, b} where L = {w|na(w)mod 3 = 0}

   cs.stackexchange.com/questions/117985

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4. Addition modulo 2 notation (Quantum Computing)

   cs.stackexchange.com/questions/76961

   In this case and for the most algorithms in quantum computers, the addition modulo addition is used for the purpose its name implies. It is a binary operation for adding two numbers with a XOR operation or with the CNOT quantum gate. It is used in the period finding algorithms for its property to recognize the same output value with two ...

5. Why is { w | |w| mod 3 = #_a (w) mod 3 } a Regular Language?

   cs.stackexchange.com/questions/152508

   The language is defined by the rule "total number of letters, modulo 3, equals total number of a's, modulo 3". This is equivalent to "number of letters that are not a's is divisible by 3". Same language, but a lot easier. You build a state machine with three states S0 S 0, S1 S 1, and S2 S 2. Being in state Si S i means "the number of letters ...

6. Meaning of $|w| ≡ 2 \\mod 3$ - Computer Science Stack Exchange

   cs.stackexchange.com/questions/83368

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7. regular languages - DFA for $L_1={w:(n_a(w)+2n_b(w)) mod 3<2}$...

   cs.stackexchange.com/questions/53433/dfa-for-l-1-wn-aw2n-bw-mod-32-and-l-2-wn...

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8. Regular expression for $\\{x : \\#_{01}(x) \\mod 3 = 0\\}$

   cs.stackexchange.com/questions/99842

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9. How to draw a clearly arranged DFA of a language with modulo...

   cs.stackexchange.com/questions/41242

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10. Design a DFA that accepts numbers whose sum of digits is

    cs.stackexchange.com/questions/145334/design-a-dfa-that-accepts-numbers-whose...

    A good first step for designing automata is to think about what states you will need. Here, you would need to remember the sum – which is not possible with a DFA – but thankfully, we only need to remember the sum in mod3 arithmetic, which means it can only have three distinct values: 0, 1 or 2.

11. FA for w when length of w is even or divisible by 3

    cs.stackexchange.com/questions/86075/fa-for-w-when-length-of-w-is-even-or...

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