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21128
bio website joelreyesnoche.wordpress.com/…
location Camarines Sur, Philippines
age 39
visits member for 2 years, 11 months
seen 18 hours ago

I am an associate professor at the Department of Mathematics, Ateneo de Naga University, Naga City, Camarines Sur, Philippines.


18h
comment A question using arithmetic progression: How long does it take to fill a rectangular tank?
You already asked this question at math.stackexchange.com/q/851108/18398. Why do you ask it again?
19h
comment Using the quadratic equation to find the time for the ball to drop to a fifth of the height of the building
You already asked this question at math.stackexchange.com/q/858124/18398. Why do you ask it again?
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comment How do I find which value is greater?
@user137452, why do you say that "no one goes to Chemistry Stack exchange"? That site currently has 5,302 users.
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awarded  Enlightened
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awarded  Nice Answer
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comment Strategy In auction bidding
Auction theory is more of an economics topic, but unfortunately an Economics StackExchange proposal didn't work out.
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comment Strategy In auction bidding
+1 for the question, by the way.
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comment Strategy In auction bidding
Actually, sometimes it is possible to know what another bidder's maximum amount is. For example, a piece of office equipment is being auctioned and the other bidder represents a government organization with a limited budget for that equipment (sometimes this amount is publicly known).
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comment Strategy In auction bidding
Actually, there are some auctions (sealed bids) where sometimes only one bid per bidder per lot is allowed. Also, if you know the maximum amount a certain bidder can make, and the maximum amounts of the bidders differ, then it does make a difference if you know who made a bid.
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comment Strategy In auction bidding
Sorry, I wrote the answer above before I saw your comments in the main post.
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answered Strategy In auction bidding
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comment Strategy In auction bidding
Can the bidders be identified? That is, if the bids are public, and you see a bid, can you say who among the bidders made it?
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comment Strategy In auction bidding
Do the bidders have a maximum amount for bidding? If so, do these amounts differ? Are these amounts known to all the bidders?
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comment Strategy In auction bidding
@JacobSteiner, exactly one of the three, or at least one of the three?
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comment Strategy In auction bidding
Are the bids public (known to the other bidders) or are they sealed? May a bidder bid more than once per lot?
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comment Strategy In auction bidding
Can a bidder bid on the three lots at the same time? Also, once a bidder wins a lot, will he or she no longer bid on the remaining lots?
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comment Strategy In auction bidding
Are you assuming that the three separate lots are auctioned one at a time, that is, the bidding for one lot starts and ends before the bidding for another lot starts and ends? Or is there an overlap of bidding times?
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comment Strategy In auction bidding
Are you or the other bidders allowed to collude (to act together through a secret understanding, especially with evil or harmful intent)?
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comment Axiomatic proof and Boolean algebra?
What have you tried? For example, did you notice that $a'b'c+ab'c=b'c$?
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comment Generalized triangle with negative angle?
Good question. Although not related to it, I just want to mention that I once read about having triangles with possibly negative sides. (I forgot the details, perhaps something to do with negative areas?)