tobysky
Member
- Joined
- Sep 3, 2010
- Member Type
- Student or Learner
- Native Language
- Chinese
- Home Country
- China
- Current Location
- China
Suppose I have four time periods as follows:
Period A: from July 1st, 2010 to July 10th, 2010,
Period B: from July 3rd, 2010 to July 12th, 2010.
Period C: from July 3rd, 2010 to July 9th, 2010.
Period D: from July 15th, 2010 to July 19th, 2010.
Can I say:
1) Period C is the subset of period A.
2) There is an intersection between period A and B.
3) There is no intersection between period A and D.
or any suggestions on words subset, intersection and union of set?
How to describe time period relationship?
Many thanks.
Period A: from July 1st, 2010 to July 10th, 2010,
Period B: from July 3rd, 2010 to July 12th, 2010.
Period C: from July 3rd, 2010 to July 9th, 2010.
Period D: from July 15th, 2010 to July 19th, 2010.
Can I say:
1) Period C is the subset of period A.
2) There is an intersection between period A and B.
3) There is no intersection between period A and D.
or any suggestions on words subset, intersection and union of set?
How to describe time period relationship?
Many thanks.
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