Pith Number

pith:VVWRULIY

pith:2019:VVWRULIYUY2FZCEVEOJ6ZQKYG5

not attested not anchored not stored refs pending

Sparse Nerves in Practice

Morten Brun, Nello Blaser

arxiv:1904.10550 v1 · 2019-04-23 · 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{VVWRULIYUY2FZCEVEOJ6ZQKYG5}

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	2026-05-17T23:47:53.436227Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad6d1a2d18a6345c88952393ecc158375575762b1b85903ca77e8d3e1d48e345

Aliases

arxiv: 1904.10550 · arxiv_version: 1904.10550v1 · doi: 10.48550/arxiv.1904.10550 · pith_short_12: VVWRULIYUY2F · pith_short_16: VVWRULIYUY2FZCEV · pith_short_8: VVWRULIY

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/VVWRULIYUY2FZCEVEOJ6ZQKYG5 \
  | 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: ad6d1a2d18a6345c88952393ecc158375575762b1b85903ca77e8d3e1d48e345

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8cd593d4e11edf90be1318926e37c4c31c318f181fc3720c330e1724b84cbc9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2019-04-23T22:03:30Z",
    "title_canon_sha256": "c365402fee33a263311196a3b2764eea147cf05063acdbf90bae47e7aeb86bc6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.10550",
    "kind": "arxiv",
    "version": 1
  }
}