Pith Number

pith:R7NDOUWI

pith:2025:R7NDOUWIMGFRNPUXJQ33K72C7L

not attested not anchored not stored refs pending

A generalization of Seifert geometry based on the Siegel upper half-space

Qing Lan

arxiv:2501.05245 v2 · 2025-01-09 · math.GT · 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{R7NDOUWIMGFRNPUXJQ33K72C7L}

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	2026-06-04T01:08:27.272701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fda3752c8618b16be974c37b57f42fad15f871e9214dfbcde9ff20f2d27d9aa

Aliases

arxiv: 2501.05245 · arxiv_version: 2501.05245v2 · doi: 10.48550/arxiv.2501.05245 · pith_short_12: R7NDOUWIMGFR · pith_short_16: R7NDOUWIMGFRNPUX · pith_short_8: R7NDOUWI

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/R7NDOUWIMGFRNPUXJQ33K72C7L \
  | 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: 8fda3752c8618b16be974c37b57f42fad15f871e9214dfbcde9ff20f2d27d9aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3ff95670920131e8a3a420c3e9141428a5bfcd3af11574929bfa9005b4fef82",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2025-01-09T13:54:21Z",
    "title_canon_sha256": "002cfbccb8d81a39f186f3ec25be53fba56c82f94a829dda28612679500c5e4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.05245",
    "kind": "arxiv",
    "version": 2
  }
}