Pith Number

pith:35J23BDF

pith:2025:35J23BDFXSVK5MPSMAFIWUCALX

not attested not anchored not stored refs pending

Persistent Local Systems of Periodic Spaces

Adam Onus, Primoz Skraba

arxiv:2505.13051 v1 · 2025-05-19 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{35J23BDFXSVK5MPSMAFIWUCALX}

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	2026-07-05T11:05:14.417215Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df53ad8465bcaaaeb1f2600a8b50405df69e3dca4d28546dc97efc7cf138ea4b

Aliases

arxiv: 2505.13051 · arxiv_version: 2505.13051v1 · doi: 10.48550/arxiv.2505.13051 · pith_short_12: 35J23BDFXSVK · pith_short_16: 35J23BDFXSVK5MPS · pith_short_8: 35J23BDF

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/35J23BDFXSVK5MPSMAFIWUCALX \
  | 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: df53ad8465bcaaaeb1f2600a8b50405df69e3dca4d28546dc97efc7cf138ea4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f95b24b19a0bd06230324e65823001337c9ecaf602cec17dc153ddc03b9780ae",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2025-05-19T12:41:17Z",
    "title_canon_sha256": "1cfa8dde5df315fe40b6874ad5f5b8536f493eb6957fdfa0ef9cdce63431c9b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.13051",
    "kind": "arxiv",
    "version": 1
  }
}