Pith Number

pith:5QKB5QF6

pith:2021:5QKB5QF6RFX5TWFZQBKVATLXMV

not attested not anchored not stored refs pending

Cohomology of moduli space of cubic fourfolds I

Fei Si

arxiv:2103.04282 v1 · 2021-03-07 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5QKB5QF6RFX5TWFZQBKVATLXMV}

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	2026-07-05T02:21:04.147198Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec141ec0be896fd9d8b98055504d776557e9da8be293b538422af59e8860f5fe

Aliases

arxiv: 2103.04282 · arxiv_version: 2103.04282v1 · doi: 10.48550/arxiv.2103.04282 · pith_short_12: 5QKB5QF6RFX5 · pith_short_16: 5QKB5QF6RFX5TWFZ · pith_short_8: 5QKB5QF6

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/5QKB5QF6RFX5TWFZQBKVATLXMV \
  | 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: ec141ec0be896fd9d8b98055504d776557e9da8be293b538422af59e8860f5fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8b3cfbd2a7d91360370941b79cbf9d3f6a47938bdba0bab7ce854b9dbba9720",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2021-03-07T06:55:32Z",
    "title_canon_sha256": "49d1248437d4a160243796453347b8df64055efc0db613f16abb1de11eb2b0d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.04282",
    "kind": "arxiv",
    "version": 1
  }
}