Pith Number

pith:PEB277CX

pith:2017:PEB277CXSSQ42VFMWCMWXFUCSZ

not attested not anchored not stored refs pending

Related families-based attribute reduction of dynamic covering information systems with variations of object sets

Guangming Lang

arxiv:1712.01117 v1 · 2017-12-01 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PEB277CXSSQ42VFMWCMWXFUCSZ}

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	2026-05-18T00:28:59.466205Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7903affc5794a1cd54acb0996b96829649930ff42f45c8a2d74dd857701a40f4

Aliases

arxiv: 1712.01117 · arxiv_version: 1712.01117v1 · doi: 10.48550/arxiv.1712.01117 · pith_short_12: PEB277CXSSQ4 · pith_short_16: PEB277CXSSQ42VFM · pith_short_8: PEB277CX

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/PEB277CXSSQ42VFMWCMWXFUCSZ \
  | 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: 7903affc5794a1cd54acb0996b96829649930ff42f45c8a2d74dd857701a40f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dad6ab2f5d67974ce1834a6f2be41dc49fda614c1dc1a0511871695041a90b51",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-12-01T03:29:24Z",
    "title_canon_sha256": "b4dea41bf17072d5c97bb419f0141f3272f92ccdc6c55892973019ca2f78b4be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.01117",
    "kind": "arxiv",
    "version": 1
  }
}