Digit Filters Mirror7 Boxed The Mirror7 Boxed (P34ID:M7-BOX) is a so called "digit filter". A digit filter divides each digit into options. The Mirror7 filter has the following options:
Digits = Mirror7 0 = 7 1 = 8 2 = 9 3 = 0 4 = 1 5 = 2 6 = 3 7 = 4 8 = 5 9 = 6
| Mirror7 = Digits 0 = 3 1 = 4 2 = 5 3 = 6 4 = 7 5 = 8 6 = 9 7 = 0 8 = 1 9 = 2
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The addition "Boxed" (BOX) refers to the fact that in this case the position within the result is of no interest. So the filter string is always sorted in ascending order. Mirror7 (M7) as the opposite of Mirror3 (3) creates a number by subtracting 3 to each digit without carrying, which is the same as adding 7. It is also called a "shifting filter" as it does not reduce the 10 digits it just shifts each digit down by 3. Other common shifting filters are Mirror5 (M5) and Mirror3 (M3). To show you how to create the Mirror7 filter for certain numbers select one of the links below for a step by step example.
Mirror7 Boxed
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