Pith Number

pith:RJFMA7WE

pith:2013:RJFMA7WEPEKO2NKQ5RK7KCBF2E

not attested not anchored not stored refs pending

Varieties Characterized by their Endomorphisms

Hanspeter Kraft, Rafael Andrist

arxiv:1309.0030 v1 · 2013-08-30 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RJFMA7WEPEKO2NKQ5RK7KCBF2E}

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	2026-05-18T03:14:29.012285Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a4ac07ec47914ed3550ec55f50825d10067a95e262b2db9f45294bd6c977655

Aliases

arxiv: 1309.0030 · arxiv_version: 1309.0030v1 · doi: 10.48550/arxiv.1309.0030 · pith_short_12: RJFMA7WEPEKO · pith_short_16: RJFMA7WEPEKO2NKQ · pith_short_8: RJFMA7WE

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/RJFMA7WEPEKO2NKQ5RK7KCBF2E \
  | 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: 8a4ac07ec47914ed3550ec55f50825d10067a95e262b2db9f45294bd6c977655

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cf47db74687ccfa90ff38439f803c4cf4190d3df02302ae9c437e821a77fb32",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-08-30T21:24:46Z",
    "title_canon_sha256": "214a030d886c42a13dd67a74b9fa9c18f41fa72b53f261849d916d509982bf96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.0030",
    "kind": "arxiv",
    "version": 1
  }
}