Pith Number

pith:YQIUURQO

pith:2019:YQIUURQO3V3ATM2N6HLLC2B7LP

not attested not anchored not stored refs pending

Some Permanence for Large Subalgebra

Qingzhai Fan, Xiaochun Fang, Xia Zhao

arxiv:1901.08812 v1 · 2019-01-25 · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YQIUURQO3V3ATM2N6HLLC2B7LP}

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	2026-05-17T23:55:33.053342Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4114a460edd7609b34df1d6b1683f5be11901db407032c118d09d394b828e43

Aliases

arxiv: 1901.08812 · arxiv_version: 1901.08812v1 · doi: 10.48550/arxiv.1901.08812 · pith_short_12: YQIUURQO3V3A · pith_short_16: YQIUURQO3V3ATM2N · pith_short_8: YQIUURQO

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/YQIUURQO3V3ATM2N6HLLC2B7LP \
  | 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: c4114a460edd7609b34df1d6b1683f5be11901db407032c118d09d394b828e43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f96b6228bfe127922777803865b88cbcb371caab38f8b938482d9b18cb8f2eb5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2019-01-25T10:10:58Z",
    "title_canon_sha256": "abb7c628a836aac6d3b2cb3eb7157c1d0b3b3df4b3bd94b13135f2269c38e251"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.08812",
    "kind": "arxiv",
    "version": 1
  }
}