Pith Number

pith:2N7YCO5U

pith:2015:2N7YCO5UYZ2LESQANPXBSQPNFY

not attested not anchored not stored refs pending

Cofinite subsets and double negation topologies on locales of filters and ideals

Jos\'e Manuel Garc\'ia-Calcines, Luis Espa\~nol, M. Carmen M\'inguez

arxiv:1503.05531 v1 · 2015-03-18 · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2N7YCO5UYZ2LESQANPXBSQPNFY}

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	2026-05-18T01:09:49.006417Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d37f813bb4c674b24a006bee1941ed2e1bafbfbc3cc081d48105bbb57098fd20

Aliases

arxiv: 1503.05531 · arxiv_version: 1503.05531v1 · doi: 10.48550/arxiv.1503.05531 · pith_short_12: 2N7YCO5UYZ2L · pith_short_16: 2N7YCO5UYZ2LESQA · pith_short_8: 2N7YCO5U

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/2N7YCO5UYZ2LESQANPXBSQPNFY \
  | 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: d37f813bb4c674b24a006bee1941ed2e1bafbfbc3cc081d48105bbb57098fd20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14a469e048006bef8f29eac5b37f3262fadf44c5dad745d473fce05ca945e001",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2015-03-18T18:53:11Z",
    "title_canon_sha256": "f9029a07f60810a5cfb984466dad53f854c0f181800eb316e6ccc15773b25a34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.05531",
    "kind": "arxiv",
    "version": 1
  }
}