Pith Number

pith:RRT37SPQ

pith:2013:RRT37SPQJJGOZEMWIJE55LSO3M

not attested not anchored not stored refs pending

Functional identities of one variable

Matej Bre\v{s}ar, \v{S}pela \v{S}penko

arxiv:1307.2260 v1 · 2013-07-08 · 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{RRT37SPQJJGOZEMWIJE55LSO3M}

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	2026-05-18T03:18:53.001586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c67bfc9f04a4cec91964249deae4edb05a47082cda224e776ff6c300e401645

Aliases

arxiv: 1307.2260 · arxiv_version: 1307.2260v1 · doi: 10.48550/arxiv.1307.2260 · pith_short_12: RRT37SPQJJGO · pith_short_16: RRT37SPQJJGOZEMW · pith_short_8: RRT37SPQ

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/RRT37SPQJJGOZEMWIJE55LSO3M \
  | 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: 8c67bfc9f04a4cec91964249deae4edb05a47082cda224e776ff6c300e401645

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8dc4347c9483dcb2d0756289b1c3d8952ca5cfbec2afc10ca4ecc22165dadbf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2013-07-08T20:29:26Z",
    "title_canon_sha256": "dc12298ca9ccd858f1b0921955ba42c1efba133037b42903ca4625f621c9acbd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2260",
    "kind": "arxiv",
    "version": 1
  }
}