Addition of Families of Intervals Question

In summary, adding families of intervals allows us to find the union of multiple sets of intervals, simplifying and combining overlapping intervals for easier data representation and analysis. To add families of intervals, we must identify and combine overlapping intervals, arrange them in numerical order, and repeat the process until all intervals are combined into one set. It is possible to add families of intervals with different types, but notation and treatment of open and closed intervals must be considered. Real-world applications of adding families of intervals include statistics, data analysis, and signal processing. Certain rules and properties, such as the commutative and associative properties, apply when adding families of intervals and must be followed for accurate and consistent results.
  • #1
cmajor47
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Homework Statement


Let A= {[-2,5],[1/2,2]} and B={[1,7],][1/4,3]}. Calculate the family A+B.

Homework Equations


Given F and G families of intervals, F+G is the family {I+J [tex]\left|[/tex] I[tex]\in[/tex]F, J[tex]\in[/tex]G}

The Attempt at a Solution


I don't understand how to calculate A+B from this equation. How do you know which intervals to add? Do I add each interval to each other to get 4 intervals in the family? I am confused.
 
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  • #2
A+B = {[-2,5]+[1,7],[-2,5]+[1/4,3],[1/2,2]+[1,7],[1/2,2]+[1/4,3]} A+B = {[-1,12],[-3/4,8],[3/2,9],[3/4,5]}
 

1. What is the purpose of adding families of intervals?

The purpose of adding families of intervals is to find the union of multiple sets of intervals. This allows us to combine and simplify overlapping intervals, making it easier to represent and analyze data.

2. How do you add families of intervals?

To add families of intervals, you first need to identify any overlapping intervals and combine them into a single interval. Then, you can arrange the intervals in numerical order and combine any adjacent intervals that overlap. This process can be repeated until all intervals have been combined into one set.

3. Is it possible to add families of intervals with different types of intervals (e.g. open and closed intervals)?

Yes, it is possible to add families of intervals with different types of intervals. However, it is important to note the differences in notation and treatment of open and closed intervals. Closed intervals include the endpoints, while open intervals do not.

4. What are some real-world applications of adding families of intervals?

Adding families of intervals has various applications in fields such as statistics, data analysis, and signal processing. For example, it can be used to combine data from different sources or to analyze trends and patterns in data sets.

5. Are there any rules or properties that apply when adding families of intervals?

Yes, there are certain rules and properties that apply when adding families of intervals. These include the commutative, associative, and distributive properties, as well as the inclusion-exclusion principle. It is important to follow these rules to ensure accurate and consistent results when adding families of intervals.

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