Click below to find all of the places that have been documented about the United Kingdom.

Hi, I recently installed maple 11 on my intel mac (macbook pro). I've been observing odd behaviour when I run some of my workheets. They stall with an error of "lost kernel". I opened the mac "activity monitor" utility to watch the memory usage and ran the worksheet again. When it reached the difficult command, I watched the free memory decrease to zero while the "inactive" memory increased. When the free memory went to zero, the kernel was lost. Could someone explain to me what's going on here? many thanks!! Mary

Maple 11, 10, 9,.. do not work under Vista yet. After a tricky installation, File Open and File Save do no work. Mathematica 5.2 and Matlab 2007 run with no problem in the same environment. I would not rush purchasing any version of Maple if it is going to run under Vista.

Hi: Procedure "rsolve" in both Maple 10 (and 11) gives a complicated answer to the following recursion: rs:=subs(n=n,4*(n-1)^2*f(n-2)-(3+8*n^2-8*n)*f(n-1)+4*f(n)*n^2); ans:=rsolve({rs=0,f(1)=3/4,f(2)=41/64},{f(k)}); The answer involves both indices "n" and "k". I tried testing the answer by checking the original recursion equation and it doesn't work. (I am not posting the answer, but you can generate it by yourself by pasting the code above) Questions: 1. What does it mean when a recursion solution involves TWO indices? An example similar to this case is given in the help file, but the answer only involves one index.

In a posting posting at http://www.math.utexas.edu/pipermail/maxima/2006/000126.html Fateman cites Gosper with an interesting approach to compute the hypergeometric function 2F1. I used that to produce a compiled version (double precision only), which can be achieved from Excel for example. The approach however can be used within Maple as well. The idea is, that with his way the linear transformations given in A&S need to be applied only once to cover the whole complex plane: up to 1 transformation one can use either Gosper's recursion or even lives in the unit circle with radius 1/2 (where the hypergeometric series already converges quite fast).

I installed Maple 11 on an AMD64 (X86_64), Debian Linux machine. The installer seems to work fine, but maple does not work: psz@potenza:~$ /usr/sms/share/maple/11/bin/maple Maple initialization error, invalid license return code psz@potenza:~$ or maybe psz@potenza:~$ /tmp/11x/bin/maple Maple initialization error, Signal received during initialization: UNKNOWN (13) psz@potenza:~$ I suspect that this error is caused by the installer creating some 32-bit binaries (that cannot work on a 64-bit machine): psz@potenza$ file bin.X86_64_LINUX/* | grep 386 bin.X86_64_LINUX/libjogl.so: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), not stripped

how do we solve elliptic PDEs with boundary value problems in maple 10

I have a new 64 bit machine with 8GB or ram and a CORE-duo processor. I just installed Maple 11 on this machine and it can't seem to access all of my memory. Programs which ran just fine under Maple 10 crash the kernel under Maple 11. The same problem works just fine on my home machine which is a 32 bit machine with 2GB of ram. What's up with Maple running on an 64 bit machine?

hi, i made a markov model with 2 treshold values (k and n, n>k) and 3 maintenance activities. i write my availability equation: for a = λd / (λd + λin) P(0,0)= 1 / ( k + ((k-1) * (λin/μin)) + ((k-1) * (λin/μm)) + (a * ((1-a^(n-k))/(1-a))) + (a * ((1-a^(n-k))/(1-a)) * (λin/μin)) + (a * ((1-a^(n-k))/(1-a)) * (λin/μM)) + ((a^(n-k) * (λd/μD)) ) Availability = P(0,0)*(k + (a * (1-a^(n-k)))) i want to find the optimal λin which max. the availability.. is there any way to solve without giving any numerical values??

Another pesky student question. Is the speed of light an asymptotic, or limiting value that no other body can perfectly attain ? Does light travel at exactly this value or very very close to it? Would it make sense to try to exactly attain the value of c with something other than EM energy, or would our attempts be similar to taking a limit like in simple calculus ? v/r,

For those interested in financial Math: A classical in mathematical finance is evaluating option prices by binomial trees. This has many advantages (like easy, but coarse results for American options), but it is well known to quite inaccurate for various reasons - even for European options. The 'best' known improvement is due to Leisen-Reimer. They all suffer from low order convergence towards a continuous model. The standard reference model is CCR, the Cox-Ross-Rubinstein tree.

Hi everyone! recently i tried to install maple 10 to my new laptop (runs with windows xp with 2gb ram). The installation went well, just that maple 10 didnt execute at all. It seems that only maplew.exe runs, but not maple.exe (I looked in windows task-manager). Anyone has any ideas?help me please....

I have just read a wonderful paper Magic Ink: Information Software and the Graphical Interface. The most memorable section subtitle being interactivity considered harmlful. This is a real treasure trove of wonderful design ideas for interfaces for information-rich applications.

I have a polynomial with rather large coefficients: p:=1603710010923073199968*y^23-4364988985594176705252*y^24+422547655969296000+7264153102578558336*y^45+169065700403745582736*y^13-128611747738076673444*y^8-8563613556595259093454*y^28+6789223631529042689902*y^27-2130626240045610796318*y^26+525108809846649600*y+1728547142232628712538*y^18-5445232004984302080*y^2+19613711933501261400*y^4-9838556541278899632*y^3+5707977232657388436*y^6+52290885425808675492*y^5+2632496986338017041292*y^25-171614538652243215240*y^44-1036024897217729030368*y^20-1012602829399487118036*y^40-539338455258111066258*y^42+2773573937520155972892*y^37+520826747617965591864*y^41+2623263653532705732432*y^39-1803335585671962783882*y^38-8590075986982288335146*y^32+611279042420310141816*y^43+4951684899383201226144*y^33-4424947769398292794458*y^34+5954251478749298303256*y^35-3833757485270573904036*y^36-5651683376181765437070*y^30+8111066818063209027372*y^31-635739559009793671968*y^21+401371746662750628814*y^14+85726525982246133894*y^47-236062009670172788728*y^17+1489801241415705188478*y^22+43199536383488301966*y^11+5320957181769399275536*y^29+203205821220894857112*y^10-49909141835427891744*y^46-107459394748809783696*y^7-537835780154113147710*y^12-637675704663881634042*y^16+203782518948443125548*y^9-45370560690351525618*y^15-410373207686338300844*y^19;

I have a question regarding privacy with respect to uploaded files on mapleprimes. It has to deal with where public worksheets are downloaded from. I upload all of my worksheets as public files to ensure the quickest and greatest amount of help to my requests. However, my question is when those public worksheets are downloaded are they actually downloaded from the actual creator's machine (e.g. C: mydocuments...etc), or from somewhere else ? hope that question came across clear. v/r,