Pith Number

pith:RM4XM2R4

pith:2019:RM4XM2R4Y4RMIBLFO7RU43HOFE

not attested not anchored not stored refs pending

Studying Algebraic Structures using Prover9 and Mace4

Paulo Oliva, Rob Arthan

arxiv:1908.06479 v1 · 2019-08-14 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RM4XM2R4Y4RMIBLFO7RU43HOFE}

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	2026-07-04T23:58:16.119972Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b39766a3cc722c4056577e34e6cee29148fb174339c620d5bf15791fd1416e4

Aliases

arxiv: 1908.06479 · arxiv_version: 1908.06479v1 · doi: 10.48550/arxiv.1908.06479 · pith_short_12: RM4XM2R4Y4RM · pith_short_16: RM4XM2R4Y4RMIBLF · pith_short_8: RM4XM2R4

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/RM4XM2R4Y4RMIBLFO7RU43HOFE \
  | 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: 8b39766a3cc722c4056577e34e6cee29148fb174339c620d5bf15791fd1416e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac84f63e4d9e5ec1ae09c7511469f8d403a0e527b2d6cb75fce4f19c5a426a4c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-08-14T15:24:27Z",
    "title_canon_sha256": "adc85e18b18dce029a0f8156f5981af928331fb195bf24664f2436ea57e016be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.06479",
    "kind": "arxiv",
    "version": 1
  }
}