Pith Number

pith:VYW3AGJ2

pith:2017:VYW3AGJ2UQ2BDBSZUTLHAOZHYG

not attested not anchored not stored refs pending

Bestvina complex for group actions with a strict fundamental domain

Nansen Petrosyan, Tomasz Prytu{\l}a

arxiv:1712.07606 v2 · 2017-12-20 · math.GR · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VYW3AGJ2UQ2BDBSZUTLHAOZHYG}

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	2026-05-18T00:22:49.107725Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae2db0193aa434118659a4d6703b27c19178787da60473c4e59fdcc09d8e1c7d

Aliases

arxiv: 1712.07606 · arxiv_version: 1712.07606v2 · doi: 10.48550/arxiv.1712.07606 · pith_short_12: VYW3AGJ2UQ2B · pith_short_16: VYW3AGJ2UQ2BDBSZ · pith_short_8: VYW3AGJ2

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/VYW3AGJ2UQ2BDBSZUTLHAOZHYG \
  | 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: ae2db0193aa434118659a4d6703b27c19178787da60473c4e59fdcc09d8e1c7d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc40c67b55a914f6e724750d1677df905175f67c79055eddda0611bb15c9f571",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2017-12-20T17:50:23Z",
    "title_canon_sha256": "108a7e776ca232dc9dba12d20d63363ebf32293723626324ed7673655e3d76bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.07606",
    "kind": "arxiv",
    "version": 2
  }
}