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| ====Output Conditions for Tape Input "0"==== | | ====Output Conditions for Tape Input "0"==== |
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− | Let <math>p_0\!</math> be the proposition that we get by conjoining the proposition that describes the initial conditions for tape input "0" with the proposition that describes the truncated turing machine <math>\operatorname{Stunt}(2).</math> As it turns out, <math>p_0\!</math> has a single satisfying interpretation, and this is represented as a singular proposition in terms of its positive logical features in the following display: | + | Let <math>p_0\!</math> be the proposition that we get by conjoining the proposition that describes the initial conditions for tape input "0" with the proposition that describes the truncated turing machine <math>\operatorname{Stunt}(2).</math> As it turns out, <math>p_0\!</math> has a single satisfying interpretation. This interpretation is expressible in the form of a singular proposition, which can in turn be indicated by its positive logical features, as shown in the following display: |
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| <br> | | <br> |
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| The Output Conditions for Tape Input "0" can be read as follows: | | The Output Conditions for Tape Input "0" can be read as follows: |
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− | At the time p_0, M is in the state q_0, and
| + | {| align="center" cellpadding=8" width="90%" |
− | At the time p_0, H is reading cell r_1, and
| + | | |
− | At the time p_0, cell r_0 contains "#", and
| + | <p>At the time <math>p_0,\!</math> machine <math>\operatorname{M}</math> is in the state <math>q_0,\!</math> and</p> |
− | At the time p_0, cell r_1 contains "0", and
| + | <p>At the time <math>p_0,\!</math> scanner <math>\operatorname{H}</math> is reading cell <math>r_1,\!</math> and</p> |
− | At the time p_0, cell r_2 contains "#", and
| + | <p>At the time <math>p_0,\!</math> cell <math>r_0\!</math> contains the symbol <math>\texttt{\#},</math> and</p> |
− | | + | <p>At the time <math>p_0,\!</math> cell <math>r_1\!</math> contains the symbol <math>\texttt{0},</math> and</p> |
− | At the time p_1, M is in the state q_0, and
| + | <p>At the time <math>p_0,\!</math> cell <math>r_2\!</math> contains the symbol <math>\texttt{\#},</math> and</p> |
− | At the time p_1, H is reading cell r_2, and
| + | |- |
− | At the time p_1, cell r_0 contains "#", and
| + | | |
− | At the time p_1, cell r_1 contains "0", and
| + | <p>At the time <math>p_1,\!</math> machine <math>\operatorname{M}</math> is in the state <math>q_0,\!</math> and</p> |
− | At the time p_1, cell r_2 contains "#", and
| + | <p>At the time <math>p_1,\!</math> scanner <math>\operatorname{H}</math> is reading cell <math>r_2,\!</math> and</p> |
− | | + | <p>At the time <math>p_1,\!</math> cell <math>r_0\!</math> contains the symbol <math>\texttt{\#},</math> and</p> |
− | At the time p_2, M is in the state q_#, and
| + | <p>At the time <math>p_1,\!</math> cell <math>r_1\!</math> contains the symbol <math>\texttt{0},</math> and</p> |
− | At the time p_2, H is reading cell r_1, and
| + | <p>At the time <math>p_1,\!</math> cell <math>r_2\!</math> contains the symbol <math>\texttt{\#},</math> and</p> |
− | At the time p_2, cell r_0 contains "#", and
| + | |- |
− | At the time p_2, cell r_1 contains "0", and
| + | | |
− | At the time p_2, cell r_2 contains "#".
| + | <p>At the time <math>p_2,\!</math> machine <math>\operatorname{M}</math> is in the state <math>q_\#,\!</math> and</p> |
| + | <p>At the time <math>p_2,\!</math> scanner <math>\operatorname{H}</math> is reading cell <math>r_1,\!</math> and</p> |
| + | <p>At the time <math>p_2,\!</math> cell <math>r_0\!</math> contains the symbol <math>\texttt{\#},</math> and</p> |
| + | <p>At the time <math>p_2,\!</math> cell <math>r_1\!</math> contains the symbol <math>\texttt{0},</math> and</p> |
| + | <p>At the time <math>p_2,\!</math> cell <math>r_2\!</math> contains the symbol <math>\texttt{\#}.</math></p> |
| + | |} |
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| The output of <math>\operatorname{Stunt}(2)</math> being the symbol that rests under the tape head <math>\operatorname{H}</math> if and when the machine <math>\operatorname{M}</math> reaches one of its resting states, we get the result that <math>\operatorname{Parity}(0) = 0.</math> | | The output of <math>\operatorname{Stunt}(2)</math> being the symbol that rests under the tape head <math>\operatorname{H}</math> if and when the machine <math>\operatorname{M}</math> reaches one of its resting states, we get the result that <math>\operatorname{Parity}(0) = 0.</math> |