Pith Number

pith:ED6HQPUO

pith:2025:ED6HQPUO6QUKCV2B44LRRDLOLP

not attested not anchored not stored refs pending

Cobordism of nested manifolds

Alba Send\'on Blanco

arxiv:2512.18277 v2 · 2025-12-20 · math.AT · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ED6HQPUO6QUKCV2B44LRRDLOLP}

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	2026-06-09T02:07:15.857018Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20fc783e8ef428a15741e717188d6e5bfa79984cb7e9d4cd4c7174e5aaf12c35

Aliases

arxiv: 2512.18277 · arxiv_version: 2512.18277v2 · doi: 10.48550/arxiv.2512.18277 · pith_short_12: ED6HQPUO6QUK · pith_short_16: ED6HQPUO6QUKCV2B · pith_short_8: ED6HQPUO

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/ED6HQPUO6QUKCV2B44LRRDLOLP \
  | 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: 20fc783e8ef428a15741e717188d6e5bfa79984cb7e9d4cd4c7174e5aaf12c35

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2cdf6fa93603762b19aec973ef8205649b95039a11c9ae894907e4a86dcb69d6",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2025-12-20T08:49:51Z",
    "title_canon_sha256": "69746a1c0d21ede857e7fe3e629a15672132912a7e30a5319aaabfcadc655f35"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2512.18277",
    "kind": "arxiv",
    "version": 2
  }
}