Pith Number

pith:WIS6LNNU

pith:2018:WIS6LNNUP5NH6JQWGLZD3S4WRB

not attested not anchored not stored refs pending

A zoo of geometric homology theories

Matthias Kreck

arxiv:1805.02409 v1 · 2018-05-07 · 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{WIS6LNNUP5NH6JQWGLZD3S4WRB}

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	2026-05-18T00:16:40.034554Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b225e5b5b47f5a7f261632f23dcb96886cc7c1d88acbd8d14e969c4c868de111

Aliases

arxiv: 1805.02409 · arxiv_version: 1805.02409v1 · doi: 10.48550/arxiv.1805.02409 · pith_short_12: WIS6LNNUP5NH · pith_short_16: WIS6LNNUP5NH6JQW · pith_short_8: WIS6LNNU

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/WIS6LNNUP5NH6JQWGLZD3S4WRB \
  | 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: b225e5b5b47f5a7f261632f23dcb96886cc7c1d88acbd8d14e969c4c868de111

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b41879a8a58a42e617f21b1a58de1ffaf1a10141283a3e8e2d6f30ad6f0d92f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2018-05-07T09:15:24Z",
    "title_canon_sha256": "63face2094027c14438df80ba66a8606f0a9512289e34e0c75339baefec76ce2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.02409",
    "kind": "arxiv",
    "version": 1
  }
}