Pith Number

pith:7B7O4SNN

pith:2019:7B7O4SNNDZSIBUNSOHVLJNIPGH

not attested not anchored not stored refs pending

The unit map of the algebraic special linear cobordism spectrum

Maria Yakerson

arxiv:1908.03859 v2 · 2019-08-11 · math.KT · math.AG · 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{7B7O4SNNDZSIBUNSOHVLJNIPGH}

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	2026-07-05T06:22:51.618331Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f87eee49ad1e6480d1b271eab4b50f31daf8218f0e2ad0d5e34c3150bcba8dad

Aliases

arxiv: 1908.03859 · arxiv_version: 1908.03859v2 · doi: 10.48550/arxiv.1908.03859 · pith_short_12: 7B7O4SNNDZSI · pith_short_16: 7B7O4SNNDZSIBUNS · pith_short_8: 7B7O4SNN

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/7B7O4SNNDZSIBUNSOHVLJNIPGH \
  | 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: f87eee49ad1e6480d1b271eab4b50f31daf8218f0e2ad0d5e34c3150bcba8dad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c2508d66ef04ef008fc08506d04bb37053d95cbe43da117ea5a552a6496c408",
    "cross_cats_sorted": [
      "math.AG",
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2019-08-11T06:31:44Z",
    "title_canon_sha256": "bcebdc04e1b58c815088e1c22fdd8c5b0af27e9d694c6d6bec23db83c5ce36ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.03859",
    "kind": "arxiv",
    "version": 2
  }
}