Pith Number

pith:FFQ3WJY5

pith:2017:FFQ3WJY5KIHPVEHU2277RG74R5

not attested not anchored not stored refs pending

Generic conformally flat hypersurfaces in $\mathbb{R}^4$

Tongzhu Li, Xiu Ji

arxiv:1709.01657 v1 · 2017-09-06 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FFQ3WJY5KIHPVEHU2277RG74R5}

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	2026-05-18T00:35:54.676051Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2961bb271d520efa90f4d6bff89bfc8f7fd10dca3886dbbd07709f89903181aa

Aliases

arxiv: 1709.01657 · arxiv_version: 1709.01657v1 · doi: 10.48550/arxiv.1709.01657 · pith_short_12: FFQ3WJY5KIHP · pith_short_16: FFQ3WJY5KIHPVEHU · pith_short_8: FFQ3WJY5

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/FFQ3WJY5KIHPVEHU2277RG74R5 \
  | 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: 2961bb271d520efa90f4d6bff89bfc8f7fd10dca3886dbbd07709f89903181aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5944c546dec8b05701166db36dd37540d95be666a07b447a40922803ee3cc6f3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-09-06T02:55:04Z",
    "title_canon_sha256": "1a3c0aa1384e244d717535165816c77edc1260d5e43841db5a8d466b4ef16cb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.01657",
    "kind": "arxiv",
    "version": 1
  }
}