Pith Number

pith:ZV7CYD5Q

pith:2018:ZV7CYD5QME5DKRY5WUHLRPA5PF

not attested not anchored not stored refs pending

Abelian quotients of the categories of short exact sequences

Zengqiang Lin

arxiv:1802.03683 v1 · 2018-02-11 · math.RT · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZV7CYD5QME5DKRY5WUHLRPA5PF}

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	2026-05-18T00:23:50.784783Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd7e2c0fb0613a35471db50eb8bc1d79739a2e2eb90d1da1601600e5fda7fc34

Aliases

arxiv: 1802.03683 · arxiv_version: 1802.03683v1 · doi: 10.48550/arxiv.1802.03683 · pith_short_12: ZV7CYD5QME5D · pith_short_16: ZV7CYD5QME5DKRY5 · pith_short_8: ZV7CYD5Q

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/ZV7CYD5QME5DKRY5WUHLRPA5PF \
  | 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: cd7e2c0fb0613a35471db50eb8bc1d79739a2e2eb90d1da1601600e5fda7fc34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d424f71c95b5745e7f1fbf7d285d496c6b48ea890989b980b82064a6a6eb874",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RT",
    "submitted_at": "2018-02-11T02:51:22Z",
    "title_canon_sha256": "5870f2661cbe5a73d82ce73ee69642f281251539af4e997993738fd0dad1fb59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.03683",
    "kind": "arxiv",
    "version": 1
  }
}