# Bugs We're Working On (Status)

For Sage Days 35.5.

This is as accurate as we've made it. The list of appropriately tagged Trac tickets is probably the most accurate list possible for reporting purposes.

## Bugs to work on and/or solve

(new) #11201 Point users of solve() to the to_poly_solve option

(needs work) #11143 Finish ticket defining symbolic functions for exponential integral special functions

(new) #12074 symbolic nth root function for plotting, etc.

(new) #12094 update Maxima

(needs work) #12220 Updated CBC package

## Pages on Trac with lots more bugs of relevance

## Not really a bug

#12060 Add formatting option to slider's displayed value

## Bugs actually worked on and/or solved

### Sage library bugs

(needs work) #1173 implement numerical evaluation of erf at complex arguments

(positive review) #2956 generic multivariate polynomials are buggy on exponent overflow

(needs review) #4498 Implement a symbolic version of the arg function

(positive review) #6442 Random(?) index error with determinant method

(new) #9129 sqrt memory leaks

(needs review) #9130 Access to beta function

(positive_review) #9248 Doc fix for factorial function (types of accepted input)

(positive review) #9362 Invalidate None as a vertex label.

(needs work) #9411 Given points on an elliptic curve, this finds a LLL reduced ZZ-independent set

(new) #9874 add a function for the derivative of ceil and floor

(needs review) #10075 Make log gamma symbolic

(needs review) #10057 Change import location for decorator_defaults in sagenb interact.py

(needs info) #10193 Create the category of GradedEnumeratedSets

(positive review) #10489 Slope fields and python lambdas: Rebasing outdated patch, needs review

(needs work) #10750 Fix solve so that additional args are properly handled

(needs work) #10757 Laplacian matrix: Created patch fixing and documenting div-by-0 error

(needs work) #10895 add qitensor spkg (tensors for quantum information)

(needs review) #10923 Bad sign in integral()

(positive review) #10965 fix minor polygon doc stuff

(needs review) #11462 @parallel documentation update: Created patch updating the documentation

(positive review) #11513 add is_trivial_zero() method to symbolic expressions

(needs work) #11652 MPolynomial_libsingular reports the wrong degree

(needs info) #11666 Upgrade MPFR to 3.1.0

(new) #11705 Port Sage to SUSE Linux Power 7 (ppc64).

(needs work) #11739 add_vertex w/o params should return the new vertex

(needs review) #11771 sage crashes on some degenerate flint xgcd's

(needs review) #11888 Sage is missing the lambert_w function conversion from Maxima

(positive review) #11970 problem with R under Ubuntu 11.10

(needs work) #12075 function notation for callable matrices

(needs review) #12220 Updated CBC package

(needs review) #12282 Fix strcmp() with NULL argument in termcap library

(new) #12286 Doc fix for factorial function (algorithm parameter)

(positive review) #12288 unset HGPLAIN when appropriate

(needs work) #12289 pass algorithm argument to custom numeric evalution methods

(new) #12292 charpoly is recomputed when called with a different variable

(new) #12293 Graph(n) is not documented

(needs review) #12298 minor CallableSymbolicExpressionRing display bug

### Sage notebook and cell server bugs

(merged) Sagenb - 6 Mirror changes to the old sagenb in the flask notebook since the last fork

(merged) Sagenb - 13 Ensure JMol is loaded in the new flask notebook

(merged) Sagenb - 15 Remove GnuTLS and changed protocol so secure HTTPS connections can be started

(needs review) Sagenb - 19 Cache public worksheets for performance improvements

(needs review) Single Cell Server - 222 Fix updating of multiple interacts

(needs review) Single Cell Server - 220 Expand embedding API

(needs review) Single Cell Server - 219 Sage 4.7.2, IPython 0.10 compatibility