2.7.1 Top new questions this week

2.7.1.1 Fast calculation of discrete logarithms

http://mathematica.stackexchange.com/questions/95590/fast-calculation-of-discrete-logarithms

 
Does Mathematica have any built-in fast algorithms for calculating discrete logarithms over $(\mathbb{Z}_p)^\times$ (the group of integers modulo $p$)? 
 
Essentially, for a fixed large prime p, a  ...
 

- asked by 2012rcampion 15votes

2.7.1.2 What pseudo-random number generators are available to Mathematica users?

http://mathematica.stackexchange.com/questions/95533/what-pseudo-random-number-generators-are-available-to-mathematica-users

 
One would think I should be able answer the question I pose in the title for myself by reading the Documentation Center article ref/SeedRandom, but it's not so simple. 
 
That article does give a list  ...
 

- asked by m_goldberg (13 votes), answered by ilian (15 votes)

2.7.1.3 Efficient conversion between two partition representations

http://mathematica.stackexchange.com/questions/95410/efficient-conversion-between-two-partition-representations

 
I have a list of distinct expressions.  We can represent a partitioning of list in two ways: 
 
 
As a list of sublists partitions = {{a, b, ...}, {x, y, ...}, ...}. 
As a vector of integer partition  ...
 

- asked by Szabolcs (12 votes), answered by Leonid Shifrin (12 votes)

2.7.1.4 Why do singularities disappear when performing convolutions with the Dirac Delta function?

http://mathematica.stackexchange.com/questions/95588/why-do-singularities-disappear-when-performing-convolutions-with-the-dirac-delta

 
I am attempting to perform a convolution involving the Dirac Delta function: 
 
$\int_{-\infty}^{\infty} \frac{1}{t+1} \cdot \delta(t+1)\ dt$ 
 
I would expect that the result of this integral is  ...
 

- asked by Peter Crowley (11 votes), answered by I_Mariusz (1 vote)

2.7.1.5 Determine height of box packed with spheres

http://mathematica.stackexchange.com/questions/95566/determine-height-of-box-packed-with-spheres

 
I got such a wonderful answer regarding The Diagonals of a Regular Octagon, so I thought I'd try asking another question we had on our Pizza and Problem quiz activity at College of the Redwoods. The  ...
 

- asked by David (10 votes), answered by KennyColnago (10 votes)

2.7.1.6 How to automatically remove text from images?

http://mathematica.stackexchange.com/questions/95512/how-to-automatically-remove-text-from-images

 
I'd like to remove the text in the center of images automatically. To use Inpaint[], you need a mask, but I don't have one. So really the problem is: 
 
How to build a mask for an image that contains a  ...
 

- asked by M.R. (10 votes), answered by blochwave (36 votes)

2.7.1.7 Front ends gone wild with named slots

http://mathematica.stackexchange.com/questions/95351/front-ends-gone-wild-with-named-slots

 
Bug introduced in version 10 
 
 
 
Assume the following simple expression 
 
{#"Test"}& 
 
 
Now go in front of the # and just start typing another named slot expression. On my system, the front end  ...
 

- asked by halirutan 10votes