Pith Number

pith:Y2L4AG4Q

pith:2014:Y2L4AG4QXEHHPGZ3DPXHS6PZ46

not attested not anchored not stored refs pending

Free idempotent generated semigroups and endomorphism monoids of free $G$-acts

Dandan Yang, Igor Dolinka, Victoria Gould

arxiv:1402.4042 v2 · 2014-02-17 · 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{Y2L4AG4QXEHHPGZ3DPXHS6PZ46}

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	2026-05-18T00:28:07.591719Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c697c01b90b90e779b3b1bee7979f9e79e3f5564d312ba0e333572882651d07b

Aliases

arxiv: 1402.4042 · arxiv_version: 1402.4042v2 · doi: 10.48550/arxiv.1402.4042 · pith_short_12: Y2L4AG4QXEHH · pith_short_16: Y2L4AG4QXEHHPGZ3 · pith_short_8: Y2L4AG4Q

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/Y2L4AG4QXEHHPGZ3DPXHS6PZ46 \
  | 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: c697c01b90b90e779b3b1bee7979f9e79e3f5564d312ba0e333572882651d07b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6d8e0b49333327e205ff6872cd1e714135a3ba5b7ddb4ce87c90639856c1008",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2014-02-17T15:55:42Z",
    "title_canon_sha256": "9d49681cd57e5e0bc1c1b643e9a68fb2241c053c932f3768a1e6958000e39d78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.4042",
    "kind": "arxiv",
    "version": 2
  }
}