Pith Number

pith:WWRNWVHD

pith:2001:WWRNWVHD2XVQFRIIZJH7DICZWI

not attested not anchored not stored refs pending

Deformation and rigidity of simplicial group actions on trees

Max Forester

arxiv:math/0107008 v2 · 2001-07-02 · math.GR · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WWRNWVHD2XVQFRIIZJH7DICZWI}

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	2026-05-18T02:38:00.777191Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5a2db54e3d5eb02c508ca4ff1a059b203ba62e162651976708cb20a6f8e3656

Aliases

arxiv: math/0107008 · arxiv_version: math/0107008v2 · doi: 10.48550/arxiv.math/0107008 · pith_short_12: WWRNWVHD2XVQ · pith_short_16: WWRNWVHD2XVQFRII · pith_short_8: WWRNWVHD

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/WWRNWVHD2XVQFRIIZJH7DICZWI \
  | 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: b5a2db54e3d5eb02c508ca4ff1a059b203ba62e162651976708cb20a6f8e3656

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5822605e61f3589ad5628dfe500b638e7483e6971c315b5a24cd29c6796cd088",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "",
    "primary_cat": "math.GR",
    "submitted_at": "2001-07-02T13:54:55Z",
    "title_canon_sha256": "59c17aa1b0de7e4a594e3b6c054fb004d98f5bf5413d80534b58ab6d6a24545c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0107008",
    "kind": "arxiv",
    "version": 2
  }
}