Pith Number

pith:W2T6R3N2

pith:2016:W2T6R3N2TOJYLLUMXL6HYQ5RC7

not attested not anchored not stored refs pending

Q-Fano threefolds of index $7$

Yuri Prokhorov

arxiv:1603.01706 v2 · 2016-03-05 · 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{W2T6R3N2TOJYLLUMXL6HYQ5RC7}

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	2026-05-18T00:38:04.490714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6a7e8edba9b9385ae8cbafc7c43b117e1343d44ad1a53a32335df6823e36e64

Aliases

arxiv: 1603.01706 · arxiv_version: 1603.01706v2 · doi: 10.48550/arxiv.1603.01706 · pith_short_12: W2T6R3N2TOJY · pith_short_16: W2T6R3N2TOJYLLUM · pith_short_8: W2T6R3N2

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/W2T6R3N2TOJYLLUMXL6HYQ5RC7 \
  | 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: b6a7e8edba9b9385ae8cbafc7c43b117e1343d44ad1a53a32335df6823e36e64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7141f9388959ca92fd83b2f89512758eec7e769967d6e0b5987b1fbb788ff72a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-03-05T10:14:48Z",
    "title_canon_sha256": "e71d0204535e2108e23cad0a2c2d040307ff7c5b5892db4aac20311d30a8baf5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.01706",
    "kind": "arxiv",
    "version": 2
  }
}