Pith Number

pith:EOIHPR6I

pith:2017:EOIHPR6ISMWCXOFVCPGMNRYC4S

not attested not anchored not stored refs pending

Poly-freeness of even Artin groups of FC type

Conchita Martinez-Perez, Luis Paris (IMB), Ruben Blasco-Garcia

arxiv:1705.05574 v1 · 2017-05-16 · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EOIHPR6ISMWCXOFVCPGMNRYC4S}

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	2026-05-18T00:44:22.392087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

239077c7c8932c2bb8b513ccc6c702e4b8195c3b3e397d7c00daa2a01c9616d0

Aliases

arxiv: 1705.05574 · arxiv_version: 1705.05574v1 · doi: 10.48550/arxiv.1705.05574 · pith_short_12: EOIHPR6ISMWC · pith_short_16: EOIHPR6ISMWCXOFV · pith_short_8: EOIHPR6I

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/EOIHPR6ISMWCXOFVCPGMNRYC4S \
  | 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: 239077c7c8932c2bb8b513ccc6c702e4b8195c3b3e397d7c00daa2a01c9616d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3745b2637add4dfaa51c263e13654bae297aa81f385ac4f56b00790b24d93383",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2017-05-16T08:12:22Z",
    "title_canon_sha256": "0f8e12699a59eaa96a50e76d421f2536bd75283666061bcbc5cef6963c84f510"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.05574",
    "kind": "arxiv",
    "version": 1
  }
}