Pith Number

pith:KRSCFHRQ

pith:2018:KRSCFHRQWZYSVBMZMGVN6W7P43

not attested not anchored not stored refs pending

A generalization of Pappus chain theorem

Hiroshi Okumura

arxiv:1805.09669 v2 · 2018-05-21 · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KRSCFHRQWZYSVBMZMGVN6W7P43}

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	2026-05-18T00:14:28.127689Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5464229e30b6712a859961aadf5befe6c4f401a9c88ac7cb4e9062baaaedacae

Aliases

arxiv: 1805.09669 · arxiv_version: 1805.09669v2 · doi: 10.48550/arxiv.1805.09669 · pith_short_12: KRSCFHRQWZYS · pith_short_16: KRSCFHRQWZYSVBMZ · pith_short_8: KRSCFHRQ

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/KRSCFHRQWZYSVBMZMGVN6W7P43 \
  | 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: 5464229e30b6712a859961aadf5befe6c4f401a9c88ac7cb4e9062baaaedacae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fdafaf2b4e679b73e87fa17899c2fb0299824648033416abcc0d484a4926d487",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2018-05-21T23:15:09Z",
    "title_canon_sha256": "9d4298d4c28036ffb0929609a44b40c0461755db7c72a88e589c3dfc4b42d6d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.09669",
    "kind": "arxiv",
    "version": 2
  }
}