This is a problem in the first chapter of Linear Algebra Done Right. The example given in the answer is the union of coordinate axes. Using x and y as coordinates, this would be the set of points U such that either x=0 or y=0. It would be closed under scalar multiplication, but not close under addition; e.g. (1,0) + (0,1) = (1,1) which isn't in the subset.
I have been thinking about this for a while-- is there another example? The only thing I could think of was some situation where you "rotate" the axes, like the union of y=x and y=-x. It would still be closed under scalar multiplication but open under addition: (1,1) + (1, -1) = (2, 0) which isn't in the subset.
Is this the only type of solution possible? Is there a way to prove that?
Thank you very much! I'm sorry if this isn't phrased well -- I'm very new to this.
Office 2016
My example: i have a table with few cells in column O with text. Cells O3 and O10 have text. I used =IF(INDIRECT("O"&ROW(A3))="","",ROW(A1)). In this way i have 6 empty cells between 1 and 8.
Thanks in advance.
I have a string s that is of length n, and I need to prove that at most there are n non empty, distinct palindromic substrings in s. I can understand that it is so because every letter is a palindromic substring in itself. However, how can I write a mathematical proof of this thing, if possible?
Hello! I was trying to add a mute command but when I try to test it, it always says this error, Can Somebody help me? I can't really solve this.
https://preview.redd.it/ksbx5w0m8cb81.png?width=3839&format=png&auto=webp&s=c0297a67986f6af423e27b2d611e2b52f219e0b0
Hi all.
I am trying to work with some data and I was trying to use the coalesce feature to do something like this:
eval asset=coalesce(hostName,netbiosName,ip,macAddress)
This is necessary because I am looking at some data that sometimes doesn't have a hostname (presumably because not in DNS). But as long as I can identify it, that is all that matters to me. So I'm happy to use any of the fields in my example in order to do so.
Unfortunately, I am finding in many cases 'hostName' is not null, but rather 0 length which isn't the same as null which foils my coalesce. When I look at the raw events, I see that 'hostName' looks like:
"hostName": ""
I found a Splunk Community Post explaining some of this, but as a noob, I am having a problem extending this to my particular problem.
What I think I want to accomplish is look for instances of 'hostName' where the length is zero. If that is true, then make it null. From there, my coalesce will work as intended. Does this sound like the right approach?
I only have one field displaying this issue, so I didn't use the foreach as in the example, but this is the adaptation I tried to use for my case
|eval hostName=if(len(hostName)==0, 0, hostName)
But that just produces a literal 0 in my output using that coalesce snippet I provided above.
In pseudocode, I am attempting to perform:
if the length of hostName is 0, then
set the value of hostName to value of 0, else
leave it alone
I have also tried:
|eval hostName=if(len(hostName)==0, null(), hostName)
And that produces no output in my table when I try to display after using that coalesce function.
Does anyone have a gentle nudge for me here? If I can provide more context to help you help me, just let me know.
Today is the anniversary of my husband's death from covid. In February of this year I had an asthma attack brought on by stress and covid. I called my Dr who arranged for me to collect an inhaler from Boots in Newbury, Berkshire. As all the shops were closed I parked in a local department store carpark and collected my inhaler. I didn't park well but there were hardly any other cars there. My rear wheel was over the line. (They sent photos). My husband and I were in Corfu at the time of his death, we had planned to spend a year following his retirement, as a consequence of our being out of the country our car had been registered to my mother in law's address, as advised by the DVLA. I received all my correspondence there but nothing from the parking company. The debt collector sent the fine to my son's address. I explained the circumstances to the company, I explained that there had been no loss of income as the carpark was empty. I explained that I had bought a ticket. I had to send proof of the circumstances so I sent my dr appointment and a copy of the death certificate. I have been informed by email today that the terms and conditions of the site were breached ad the PCN was issued correctly. Should I carry on fighting or give up and pay?
Hi!
I'm trying to make a part of my card to be visible IF ANY of the given fields are non-empty (i.e. at least just one or two and so forth and up to all of them). If all given fields are empty then this part should be hidden.
Anki manual and tutorials in the web explain how to do this with condition of ALL (not ANY) of the given fields being non-empty {{#Field1}}{{#Field2}}{{#Field3}}Conditional text{{/Field3}}{{/Field2}}{{/Field1}} to show or {{^Field1}}{{^Field2}}{{^Field3}}Conditional text{{/Field3}}{{/Field2}}{{/Field1}} not to show the target piece of a card.
How to make use of ANY operator here?
ruby seems like a real kid, eating cookies at an apropriate pace of 3 a second and yang seems kind. I hope to be a avid member of this community. My girlfriend asked me to watch this and i really like it so far. See you guys around. (-:
OK so I am asking this on behalf of a friend. She saw the movie when she was 11, so around 1998. It was a horror movie that was not in English, but it was European. At the start of the film there is a reporter who gets threatened that they will get fired unless they come up with a big scoop of a story. They then roll a dice and say "if it will land on 6 I will get a good scoop". It does not land on six so the reporter then turns the dice (dye? Sorry, not a native English speaker) so that it reads 6, foreshadowing that they will make a story if one does not happen.
Then a bunch of young people are lured to a school building at night for some excuse. They find their teacher in a closet, dead. The kids also start being murdered off one by one and they are getting paranoid amongst themselves accusing eachother for being the murderer. There is a television in the school that plays them a reportage of the murders happening in the school. And there is a moment where the "final girl" sees on the TV that her own body is being wheeled away outside the school.
The movie cuts at some point and instead of night it is suddenly daytime. All the murdered kids are alive and they approach the closet where they originally found the body of the teacher, and then the movie ends.
My friend said this could be German but she isn't really a language person so she doesn't remember.
The empties are so parallel to the HUD color that I can barely see them.
Eg. If I have a table of fruits with name of fruit, color, taste, and size. I have a text box for searching fruit by name, and three combo boxes for the color/taste/size.
When I click on a search button, it runs an sql and .Form.RecordSource = (filtered query) (where it finds by the table’ s column value (eg. Name))
How would I go about coding the filtering to be done in any way without coding out for all permutations? So if the person typed the name and selected the size it would filter by both?
Thank you!
I am making a rankings sheet for someone who hosts weekly events. If someone is on a streak, they get an extra point for a win. the trouble comes in because if they miss a week their streak doesnt reset. so i need a way to qualify that a) they won the event and b) that the last event they played was also a win.
how do I reference the last non-empty cell and qualify whether or not it was a W? I've been tweaking this formula for hours and I cant seem to get it to work.
https://preview.redd.it/pzvbalg7ury71.png?width=1116&format=png&auto=webp&s=95a1ec4a05bca5072f7fda150e5aabe5a3ff49bb
