What is letter? 23 February 2019

What is letter?

TANAKA Akio
23 February 2019
ENSILA


1
Provisional definition of Letter, word and sentence.

1. Letter is immutable.
2. Letter has an indication.
3. Letter connects other letters.
4. Letters are finite.
5. Connected letters have a new indication, which is called word.
6. Word connects other words.
7. Words are infinite.
8. Connected words have a new indication, which is called sentence.
9. Sentences are infinite.

2

Letter is assumed to be generated from signal.

Provisional definition of signal.

1. Signal is immutable.
2. Signal has energy.
3. Signal has an indication.
4. Signal connects other signals.

References
1
What is signal?

       Preface, Preparation and Preparation 2 Completed

      21 November 2018 - 15 January 2019

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2
How the language has been seeked for ? 1-8