Fix broken KnotInfo URL

build/pkgs/database_knotinfo/checksums.ini

@@ -1,4 +1,4 @@
 tarball=database_knotinfo-VERSION.tar.gz
-sha1=d94335a4839946e73458064d6ad1def9595101c7
-sha256=9065ec00e22bd1e43716b3e0c2d1bb9e2c32e504a24f11d81ab556428bb4aa7f
+sha1=5d9d19ead2d50e7ab6d48fddadb0a7635a9c7ca6
+sha256=5c005386d6f3ffdca3310a1721e377f570272f702a6c81f7d7215fe3935baaf7
 upstream_url=https://files.pythonhosted.org/packages/source/d/database_knotinfo/database_knotinfo-VERSION.tar.gz

build/pkgs/database_knotinfo/package-version.txt

@@ -1 +1 @@
-2024.10.1
+2025.8.7

src/sage/databases/cubic_hecke_db.py

@@ -455,7 +455,7 @@ def description(self):
         Return a description of the link corresponding to this basis element.
 
         In the case of knots it refers to the naming according to
-        `KnotInfo <https://knotinfo.math.indiana.edu/>`__.
+        `KnotInfo <https://knotinfo.org/>`__.
 
         EXAMPLES::
 

src/sage/databases/knotinfo_db.py

@@ -3,8 +3,8 @@
 
 This module contains the class :class:`KnotInfoDataBase` and auxiliary classes
 for it, which serves as an interface to the lists of named knots and links provided
-at the web-pages `KnotInfo <https://knotinfo.math.indiana.edu/>`__ and
-`LinkInfo <https://linkinfo.sitehost.iu.edu>`__.
+at the web-pages `KnotInfo <https://knotinfo.org/>`__ and
+`LinkInfo <https://link-info-repo.onrender.com/>`__.
 
 To use the database, you need to install the optional :ref:`database_knotinfo
 <spkg_database_knotinfo>` package by the Sage command ::
@@ -48,8 +48,8 @@
 class KnotInfoColumnTypes(Enum):
     r"""
     Enum class to specify if a column from the table of knots and links provided
-    at the web-pages `KnotInfo <https://knotinfo.math.indiana.edu/>`__ and
-    `LinkInfo <https://linkinfo.sitehost.iu.edu>`__.  is used for knots only,
+    at the web-pages `KnotInfo <https://knotinfo.org/>`__ and
+    `LinkInfo <https://link-info-repo.onrender.com/>`__.  is used for knots only,
     links only or both.
 
     EXAMPLES::
@@ -68,8 +68,8 @@ class KnotInfoColumnTypes(Enum):
 class KnotInfoColumns(Enum):
     r"""
     Enum class to select a column from the table of knots and links provided
-    at the web-pages `KnotInfo <https://knotinfo.math.indiana.edu/>`__ and
-    `LinkInfo <https://linkinfo.sitehost.iu.edu>`__.
+    at the web-pages `KnotInfo <https://knotinfo.org/>`__ and
+    `LinkInfo <https://link-info-repo.onrender.com/>`__.
 
     EXAMPLES::
 
@@ -199,7 +199,7 @@ def url(self):
             sage: from sage.databases.knotinfo_db import KnotInfoDataBase
             sage: ki_db = KnotInfoDataBase()
             sage: ki_db.filename.knots.url()
-            'https://knotinfo.math.indiana.edu/'
+            'https://knotinfo.org/'
         """
         if self == KnotInfoFilename.knots:
             return self.value[0]
@@ -304,7 +304,7 @@ def description_url(self, column):
             sage: from sage.databases.knotinfo_db import KnotInfoDataBase
             sage: ki_db = KnotInfoDataBase()
             sage: ki_db.filename.knots.description_url(ki_db.columns().braid_notation)
-            'https://knotinfo.math.indiana.edu/descriptions/braid_notation.html'
+            'https://knotinfo.org/descriptions/braid_notation.html'
         """
         return '%sdescriptions/%s.html' % (self.url(), column.name)
 
@@ -317,17 +317,17 @@ def diagram_url(self, fname, single=False):
             sage: from sage.databases.knotinfo_db import KnotInfoDataBase
             sage: ki_db = KnotInfoDataBase()
             sage: ki_db.filename.knots.diagram_url('3_1-50.png')
-            'https://knotinfo.math.indiana.edu/diagram_display.php?3_1-50.png'
+            'https://knotinfo.org/diagram_display.php?3_1-50.png'
             sage: ki_db.filename.knots.diagram_url('3_1', single=True)
-            'https://knotinfo.math.indiana.edu/diagrams/3_1'
+            'https://knotinfo.org/diagrams/3_1'
         """
         if single:
             return '%sdiagrams/%s' % (self.url(), fname)
         else:
             return '%sdiagram_display.php?%s' % (self.url(), fname)
 
-    knots = ['https://knotinfo.math.indiana.edu/', 'knotinfo_data_complete']
-    links = ['https://linkinfo.sitehost.iu.edu/',  'linkinfo_data_complete']
+    knots = ['https://knotinfo.org/', 'knotinfo_data_complete']
+    links = ['https://link-info-repo.onrender.com/', 'linkinfo_data_complete']
 
 
 #----------------------------------------------------------------------------------------------------------------------------
@@ -347,7 +347,7 @@ class KnotInfoDataBase(SageObject, UniqueRepresentation):
         sage: from sage.databases.knotinfo_db import KnotInfoDataBase
         sage: ki_db = KnotInfoDataBase()
         sage: ki_db.filename.knots
-        <KnotInfoFilename.knots: ['https://knotinfo.math.indiana.edu/',
+        <KnotInfoFilename.knots: ['https://knotinfo.org/',
                                   'knotinfo_data_complete']>
     """
 
@@ -362,7 +362,7 @@ def __init__(self, install=False):
             sage: from sage.databases.knotinfo_db import KnotInfoDataBase
             sage: ki_db = KnotInfoDataBase()
             sage: ki_db.filename.links
-            <KnotInfoFilename.links: ['https://linkinfo.sitehost.iu.edu/',
+            <KnotInfoFilename.links: ['https://link-info-repo.onrender.com/',
                                       'linkinfo_data_complete']>
         """
         # some constants

src/sage/features/databases.py

@@ -180,8 +180,8 @@ class DatabaseKnotInfo(PythonModule):
     :ref:`package providing the KnotInfo and LinkInfo databases <spkg_database_knotinfo>`.
 
     The homes of these databases are the
-    web-pages `KnotInfo <https://knotinfo.math.indiana.edu/>`__ and
-    `LinkInfo <https://linkinfo.sitehost.iu.edu>`__.
+    web-pages `KnotInfo <https://knotinfo.org/>`__ and
+    `LinkInfo <https://link-info-repo.onrender.com/>`__.
 
     EXAMPLES::
 

src/sage/knots/free_knotinfo_monoid.py

@@ -4,7 +4,7 @@
 :class:`~sage.knots.knotinfo.KnotInfoBase` class.
 
 A generator of this free abelian monoid is a prime knot according to
-the list at `KnotInfo <https://knotinfo.math.indiana.edu/>`__. A fully
+the list at `KnotInfo <https://knotinfo.org/>`__. A fully
 amphicheiral prime knot is represented by exactly one generator with
 the corresponding name. For non-chiral prime knots, there are
 additionally one or three generators with the suffixes ``m``, ``r``

src/sage/knots/knotinfo.py

@@ -4,8 +4,8 @@
 
 This module contains the class :class:`KnotInfoBase` which is derived from
 :class:`Enum` and provides knots and links listed in the databases at the
-web-pages `KnotInfo <https://knotinfo.math.indiana.edu/>`__
-and `LinkInfo <https://linkinfo.sitehost.iu.edu/>`__ as its items.
+web-pages `KnotInfo <https://knotinfo.org/>`__
+and `LinkInfo <https://link-info-repo.onrender.com/>`__ as its items.
 
 This interface contains a set of about twenty knots and links statically as
 demonstration cases. The complete database can be installed as an optional Sage
@@ -209,8 +209,8 @@
 
 REFERENCES:
 
-- `KnotInfo <https://knotinfo.math.indiana.edu/>`__
-- `LinkInfo <https://linkinfo.sitehost.iu.edu/>`__
+- `KnotInfo <https://knotinfo.org/>`__
+- `LinkInfo <https://link-info-repo.onrender.com/>`__
 
 
 AUTHORS:
@@ -469,7 +469,7 @@ def is_minimal(self, link) -> bool:
 class KnotInfoBase(Enum):
     r"""
     Enum class to select the knots and links listed in the databases at the web-pages
-    `KnotInfo <https://knotinfo.math.indiana.edu/>`__ and `LinkInfo <https://linkinfo.sitehost.iu.edu/>`__.
+    `KnotInfo <https://knotinfo.org/>`__ and `LinkInfo <https://link-info-repo.onrender.com/>`__.
 
     EXAMPLES::
 
@@ -1323,7 +1323,7 @@ def cosmetic_crossing_conjecture_verified(self):
         Return whether the Cosmetic Crossing Conjecture has been verified
         for ``self``.
 
-        From the KnotInfo `description page <https://knotinfo.math.indiana.edu/descriptions/cosmetic_crossing.html>`__:
+        From the KnotInfo `description page <https://knotinfo.org/descriptions/cosmetic_crossing.html>`__:
 
             A crossing change in a diagram of a knot ``K`` is called cosmetic if
             the resulting diagram also represents ``K``. The cosmetic crossing
@@ -1359,7 +1359,7 @@ def homfly_polynomial(self, var1='v', var2='z', original=False):
 
         The HOMFLY-PT polynomial `P(L)` of a link `L` satisfies the following skein
         relation (see the corresponding `KnotInfo description page
-        <https://knotinfo.math.indiana.edu/descriptions/jones_homfly_kauffman_description/polynomial_defn.html)>`__):
+        <https://knotinfo.org/descriptions/jones_homfly_kauffman_description/polynomial_defn.html)>`__):
 
         .. MATH::
 
@@ -1460,7 +1460,7 @@ def kauffman_polynomial(self, var1='a', var2='z', original=False):
         under regular isotopy `\Delta (L) = a^{w(L)} F(L)` where `w(L)` is the
         writhe of the link `L` satisfies the following skein relation
         (see the corresponding `KnotInfo description page
-        <https://knotinfo.math.indiana.edu/descriptions/jones_homfly_kauffman_description/polynomial_defn.html)>`__):
+        <https://knotinfo.org/descriptions/jones_homfly_kauffman_description/polynomial_defn.html)>`__):
 
         .. MATH::
 
@@ -1547,7 +1547,7 @@ def jones_polynomial(self, variab=None, skein_normalization=False, puiseux=False
 
         The Jones polynomial `V(L)` of a link `L` satisfies the following skein
         relation (see the corresponding `KnotInfo description page
-        <https://knotinfo.math.indiana.edu/descriptions/jones_homfly_kauffman_description/polynomial_defn.html)>`__):
+        <https://knotinfo.org/descriptions/jones_homfly_kauffman_description/polynomial_defn.html)>`__):
 
         .. MATH::
 
@@ -2005,7 +2005,7 @@ def khovanov_polynomial(self, var1='q', var2='t', torsion='T', ring=None, origin
         - :wikipedia:`Khovanov_homology`
         - :wikipedia:`Reduced_homology`
         - [ORS2013]_
-        - `KnotInfo <https://knotinfo.math.indiana.edu/descriptions/khovanov_unreduced_integral_polynomial.html>`__
+        - `KnotInfo <https://knotinfo.org/descriptions/khovanov_unreduced_integral_polynomial.html>`__
         """
         if not ring:
             if self.is_knot():

src/sage/knots/link.py

@@ -28,8 +28,8 @@
 .. SEEALSO::
 
     There are also tables of link and knot invariants at web-pages
-    `KnotInfo <https://knotinfo.math.indiana.edu/>`__ and
-    `LinkInfo <https://linkinfo.sitehost.iu.edu>`__. These can be
+    `KnotInfo <https://knotinfo.org/>`__ and
+    `LinkInfo <https://link-info-repo.onrender.com>`__. These can be
     used inside Sage after installing the optional package
     ``database_knotinfo`` (type ``sage -i database_knotinfo`` in a command shell,
     see :mod:`~sage.knots.knotinfo`).
@@ -2071,7 +2071,7 @@ def khovanov_polynomial(self, var1='q', var2='t', torsion='T', ring=ZZ, base_rin
           be transferred to :meth:`khovanov_homology`
 
         Here we follow the conventions used in
-        `KnotInfo <https://knotinfo.math.indiana.edu/descriptions/khovanov_unreduced_integral_polynomial.html>`__
+        `KnotInfo <https://knotinfo.org/descriptions/khovanov_unreduced_integral_polynomial.html>`__
 
         OUTPUT:
 
@@ -3004,7 +3004,7 @@ def homfly_polynomial(self, var1=None, var2=None, normalization='lm'):
             in [KnotAtlas]_
 
             Use the ``'vz'`` normalization to agree with the data
-            `KnotInfo <http://www.indiana.edu/~knotinfo/>`__.
+            `KnotInfo <https://knotinfo.org/>`__.
 
         EXAMPLES: