Pith Number

pith:HOTV2ZAC

pith:2015:HOTV2ZACTDVMDVMVIC7JEM7W63

not attested not anchored not stored refs pending

Projective spaces in Fermat varieties

Alex Degtyarev

arxiv:1512.06199 v1 · 2015-12-19 · 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{HOTV2ZACTDVMDVMVIC7JEM7W63}

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	2026-05-18T01:24:04.891036Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ba75d640298eac1d59540be9233f6f6ccf28d41ec209a4ed6e530574f8616f5

Aliases

arxiv: 1512.06199 · arxiv_version: 1512.06199v1 · doi: 10.48550/arxiv.1512.06199 · pith_short_12: HOTV2ZACTDVM · pith_short_16: HOTV2ZACTDVMDVMV · pith_short_8: HOTV2ZAC

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/HOTV2ZACTDVMDVMVIC7JEM7W63 \
  | 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: 3ba75d640298eac1d59540be9233f6f6ccf28d41ec209a4ed6e530574f8616f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be5d6b97bc339c5df88813c1d4461a61f5d9513dd3170158bdffe90c18481fd3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-12-19T06:25:30Z",
    "title_canon_sha256": "31746334b14716e94ea978b7eaa7dfe2df7a1aa7ceb46c53b966c2f43ec93518"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.06199",
    "kind": "arxiv",
    "version": 1
  }
}