Pith Number

pith:U2M7OGJB

pith:2018:U2M7OGJBX4XHFBN6IJTOFYMMJN

not attested not anchored not stored refs pending

Semi-BCI Algebras

Benjamin Bedregal, Carlos Caleiro, Jo\~ao Marcos, Jocivania Pinheiro, Regivan H.N. Santiago

arxiv:1803.04808 v1 · 2018-03-13 · 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{U2M7OGJBX4XHFBN6IJTOFYMMJN}

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	2026-05-18T00:21:17.767916Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a699f71921bf2e7285be4266e2e18c4b40c268f9fd16a6f2e924ff38182a69b6

Aliases

arxiv: 1803.04808 · arxiv_version: 1803.04808v1 · doi: 10.48550/arxiv.1803.04808 · pith_short_12: U2M7OGJBX4XH · pith_short_16: U2M7OGJBX4XHFBN6 · pith_short_8: U2M7OGJB

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/U2M7OGJBX4XHFBN6IJTOFYMMJN \
  | 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: a699f71921bf2e7285be4266e2e18c4b40c268f9fd16a6f2e924ff38182a69b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71351bd77f870eedc67a185e0da0aa9a4e263038db106079cf4c024342077db6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-03-13T13:57:04Z",
    "title_canon_sha256": "d62a811acde942e2b81593d1b349b266e23e3d7b86fcc2f5bff7afa5e38a3929"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.04808",
    "kind": "arxiv",
    "version": 1
  }
}