3,996 reputation
1623
bio website None
location Boston, MA
age 64
visits member for 2 years, 5 months
seen 5 hours ago

...


5h
comment Sum of Catalan numbers
This is OEIS A014138; according to that entry, the $n^{\mathrm{th}}$ partial sum is asymptotically $\frac{2^{2n+2}}{3\sqrt{\pi}\cdot n^{3/2}}$.
5h
revised Sum of Catalan numbers
added 4 characters in body
16h
reviewed Close Disprove the statement given below
16h
reviewed No Action Needed Where did $-4x$ come from?
16h
reviewed No Action Needed Is stereographic projection the only way to make a bijection between plane and sphere?
16h
reviewed Close continuous function-constant
16h
reviewed Close Random walk probability
16h
reviewed Leave Open Flat connection with non-trivial holonomy? I cannot get it
16h
reviewed Close How the Jacobian is connected to the movement of particle from one domain to another?
16h
comment 4 crystal balls and a 10,000 story building
And for the first k-1 balls, a binary search would seem best. So for the specific case given, use the first 3 balls to get a range of 1250 floors, then test them with the last ball, giving 1253 as the maximum (or maybe 1252).
1d
reviewed Leave Open Minimizing the expression $(1+1/x)(1+m/y)$ over positive reals such that $mx+y=1$
Aug
16
reviewed Leave Open Question regarding a polynomial ring over $\mathbb{C}$
Aug
16
reviewed Leave Open What notation to use for a sequence of integers that end with digit 5?
Aug
16
reviewed Close Typical objective question on functions
Aug
16
reviewed Close Show that $\mathbb Z[x]$ and $\mathbb Q_{>0}$ are isomorphic
Aug
16
reviewed Close Finding probability of a particular person being chosen for a three person panel from a 9 person group?
Aug
16
reviewed Close 128 bit String lenght with ASCII chars?
Aug
14
reviewed Close Frequency in sample path of Markov Chain
Aug
14
reviewed Close How to derive the value of N from magic constant [Magic Square]
Aug
14
reviewed Close Question on Markov chain