Pith Number

pith:UEKEB3NQ

pith:2000:UEKEB3NQDUYZJWNSHADJITYEZK

not attested not anchored not stored refs pending

There is no tame triangulation of the infinite real Grassmannian

James F. Davis, Laura Anderson

arxiv:math/0004176 v1 · 2000-04-27 · math.GT · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UEKEB3NQDUYZJWNSHADJITYEZK}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:25:48.072385Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a11440edb01d3194d9b23806944f04ca9883f01a3f8f6ca1e3b89be8c43b941d

Aliases

arxiv: math/0004176 · arxiv_version: math/0004176v1 · doi: 10.48550/arxiv.math/0004176 · pith_short_12: UEKEB3NQDUYZ · pith_short_16: UEKEB3NQDUYZJWNS · pith_short_8: UEKEB3NQ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/UEKEB3NQDUYZJWNSHADJITYEZK \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: a11440edb01d3194d9b23806944f04ca9883f01a3f8f6ca1e3b89be8c43b941d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18fd8c5722fa13e7c49ffd2cdd088f55f4c041c0f0d49ab73d7148121f30273e",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "",
    "primary_cat": "math.GT",
    "submitted_at": "2000-04-27T21:43:49Z",
    "title_canon_sha256": "9e41306ea25a9040d0d517b81e1ee75a47d5101ec6d747125bb75fe8d608de0c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0004176",
    "kind": "arxiv",
    "version": 1
  }
}