Pith Number

pith:3KSIQOOR

pith:2011:3KSIQOORRNCHZAODTEI4YACKX2

not attested not anchored not stored refs pending

The splitting problem for coalgebras: a direct approach

M. C. Iovanov

arxiv:1109.3939 v1 · 2011-09-19 · math.RA · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3KSIQOORRNCHZAODTEI4YACKX2}

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	2026-05-18T04:12:45.522967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

daa48839d18b447c81c39911cc004abe839c06e433d431d1d65cb4cb7d92c0f0

Aliases

arxiv: 1109.3939 · arxiv_version: 1109.3939v1 · doi: 10.48550/arxiv.1109.3939 · pith_short_12: 3KSIQOORRNCH · pith_short_16: 3KSIQOORRNCHZAOD · pith_short_8: 3KSIQOOR

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/3KSIQOORRNCHZAODTEI4YACKX2 \
  | 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: daa48839d18b447c81c39911cc004abe839c06e433d431d1d65cb4cb7d92c0f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a51c0203f38cd6a00cf549d351bdead75796faa056c544eedac1d15fbf97fba5",
    "cross_cats_sorted": [
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2011-09-19T04:18:30Z",
    "title_canon_sha256": "49d1c3886e2e9ab1a2a26233088a2a8ad9b618cdd499c9b2a1020a84c23724f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.3939",
    "kind": "arxiv",
    "version": 1
  }
}