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2 3/4
The infinite series whose terms are the natural numbers 1 + 2 + 3 + 4 + ⋯ is a divergent series. The nth partial sum of the series is the triangular number
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{\displaystyle \sum _{k=1}^{n}k={\frac {n(n+1)}{2}},}
which increases without bound as n goes to infinity. Because the sequence of partial sums fails to converge to a finite limit, the series does not have a sum.
Although the series seems at first sight not to have any meaningful value at all, it can be manipulated to yield a number of mathematically interesting results. For example, many summation methods are used in mathematics to assign numerical values even to a divergent series. In particular, the methods of zeta function regularization and Ramanujan summation assign the series a value of −+1/12, which is expressed by a famous formula,
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{\displaystyle 1+2+3+4+\cdots =-{\frac {1}{12}},}
where the left-hand side has to be interpreted as being the value obtained by using one of the aforementioned summation methods and not as the sum of an infinite series in its usual meaning. These methods have applications in other fields such as complex analysis, quantum field theory, and string theory.In a monograph on moonshine theory, Terry Gannon calls this equation "one of the most remarkable formulae in science".
For sale is this Stevens model 820R 12 gage 2 3/4" pump. Rusty & pitted but functional. Barrel has some pitting inside. Strictly something to throw in the boat, under the truck seat or cut off for home protection. Good wood but it is what it is. Price is $100 and will consider ammo, US made...
Hey gun people! I have 2 boxes - 25 shells of Estate 12ga 2 3/4 00 Buckshot for sale! $40 per box, cash only. Please message me if you have any questions! Thank you!
Federal Premium Trophy Copper Sabot Slug 20 Gauge ammunition. These are 2 3/4" shells with a 275 grain sabot slug.
I have several boxes, will sell for $20 per box of 5. Brand new.
I'm selling four 25 count boxes of Fiocchi Home Defense 12 Gauge 2 3/4" 00 Buckshot. It's great stuff, but it DOES NOT cycle well in my Benelli M4. I bought it in a rush and didn't notice the "Note: May not cycle all semi-automatic shotguns." It runs great in my Winchester 1897 though, but it's...
870 Barrel. Not sure where measurement is taken but there's a pic of the end of the tape. Smooth Bore, open to trades for ammo or cash offers. Open to guns as well with cash I can throw on top. Barrel has very low shot count, Pickup in Beaverton or can ship for 30$.