Pith Number

pith:D5XMIA4S

pith:2018:D5XMIA4SEOCGX3W6ZKIQSF5B7G

not attested not anchored not stored refs pending

Quasi-projectivity of even Artin groups

Jose I. Cogolludo-Agustin, Ruben Blasco-Garcia

arxiv:1803.05274 v1 · 2018-03-14 · 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{D5XMIA4SEOCGX3W6ZKIQSF5B7G}

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	2026-05-17T23:58:05.118222Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f6ec4039223846beedeca910917a1f9a0a2a57d95de2b8b35a3b1a118bae3a7

Aliases

arxiv: 1803.05274 · arxiv_version: 1803.05274v1 · doi: 10.48550/arxiv.1803.05274 · pith_short_12: D5XMIA4SEOCG · pith_short_16: D5XMIA4SEOCGX3W6 · pith_short_8: D5XMIA4S

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/D5XMIA4SEOCGX3W6ZKIQSF5B7G \
  | 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: 1f6ec4039223846beedeca910917a1f9a0a2a57d95de2b8b35a3b1a118bae3a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9c68db260f04f9f9a2f4ae36ccae9f0365a71a767a23cab1d88e005a10d56d5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2018-03-14T13:42:45Z",
    "title_canon_sha256": "4d2078f6ae6dac4fcee987acdbf9fa4fa0b4ce4c87aa914a5ab8b0bae7ad4fd5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.05274",
    "kind": "arxiv",
    "version": 1
  }
}