Pith Number

pith:UVB4QZUV

pith:2019:UVB4QZUV2WUSGRR4E7VZEQX3WY

not attested not anchored not stored refs pending

Some remarks about trunks and morphisms of neural codes

Hamid Kulosman, Katie Christensen

arxiv:1904.04470 v2 · 2019-04-09 · math.AC · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UVB4QZUV2WUSGRR4E7VZEQX3WY}

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	2026-07-05T00:29:19.609396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a543c86695d5a923463c27eb9242fbb63ece9fa27ea03da97a49704818384748

Aliases

arxiv: 1904.04470 · arxiv_version: 1904.04470v2 · doi: 10.48550/arxiv.1904.04470 · pith_short_12: UVB4QZUV2WUS · pith_short_16: UVB4QZUV2WUSGRR4 · pith_short_8: UVB4QZUV

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/UVB4QZUV2WUSGRR4E7VZEQX3WY \
  | 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: a543c86695d5a923463c27eb9242fbb63ece9fa27ea03da97a49704818384748

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c09186ff90bd25150d62f30fb7bf08aca289fc22684945beef1a4b5e6232b74d",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AC",
    "submitted_at": "2019-04-09T05:32:35Z",
    "title_canon_sha256": "15c6c90185aed840962be6da0434b1f815430a52cff31b70c10feb63fe15017b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.04470",
    "kind": "arxiv",
    "version": 2
  }
}