MSN: The meaning behind the mysterious symbols in washing machine drawers explained
Worcester News: What do the symbols in your washing machine drawer mean?
The Northern Echo: What do the symbols in your washing machine drawer mean?
AOL: A Guide to Laundry Symbols: Find Out What Those Washing Symbols Mean
A Guide to Laundry Symbols: Find Out What Those Washing Symbols Mean
Other symbols I have seen used for "is defined to be equal to" are three horizontal lines instead of two, and $=$ with either a triangle or "def" written directly above it. I have seen variants of these used by people who predate widespread knowledge of computer programming. It would be interesting to know the earliest uses of a special symbol for this (and what symbols were chosen). An ...
Maybe instead of handling your example, because the context is not always relevant, let's look at possible groupings of the symbols. Equality $=$ is usually used for equality. $\equiv$ is occasionally used for "identically equal to," which is in a sense stronger than equality, by denoting that the thing on the left and the thing on the right are equal in a sense that they are identities of ...
What do the less-than and greater-than symbols right next to each other mean? Does it mean either less than or greater than? In other words, not equal? I am trying to understand a book that says th...
A picture may be worth a thousand words, but sometimes it’s more confusing than text. That goes double when it’s one of the many laundry symbols found on the care label of your clothes. What are all ...