Pith Number

pith:C37RFIXB

pith:2018:C37RFIXBW2HF6M36XLNVZIPRGO

not attested not anchored not stored refs pending

Homotopy type of manifolds with partially horoconvex boundary

Changwei Xiong

arxiv:1809.06982 v1 · 2018-09-19 · 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{C37RFIXBW2HF6M36XLNVZIPRGO}

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	2026-05-18T00:05:20.982378Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16ff12a2e1b68e5f337ebadb5ca1f133ba9aaa2f3887c148b27369d1d4ddc546

Aliases

arxiv: 1809.06982 · arxiv_version: 1809.06982v1 · doi: 10.48550/arxiv.1809.06982 · pith_short_12: C37RFIXBW2HF · pith_short_16: C37RFIXBW2HF6M36 · pith_short_8: C37RFIXB

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/C37RFIXBW2HF6M36XLNVZIPRGO \
  | 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: 16ff12a2e1b68e5f337ebadb5ca1f133ba9aaa2f3887c148b27369d1d4ddc546

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1b4c6debce8c0fe38703405f5cfdafbf9dbd7f487ba8506a08de46e61f95237",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-09-19T01:57:07Z",
    "title_canon_sha256": "1666460d83f7776cda9660dcb8dc95afcfc68759366777fc2e5a7b6db2a44cb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.06982",
    "kind": "arxiv",
    "version": 1
  }
}