Pith Number

pith:ED6XMO4F

pith:2014:ED6XMO4FUBNX25LBREQ6ZJFYMI

not attested not anchored not stored refs pending

Russell's hypersurface from a geometric point of view

Isac Hed\'en

arxiv:1405.4561 v2 · 2014-05-18 · 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{ED6XMO4FUBNX25LBREQ6ZJFYMI}

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	2026-05-18T01:06:29.391947Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20fd763b85a05b7d75618921eca4b8620299f68346b9f5bf6ac35d5922ea7882

Aliases

arxiv: 1405.4561 · arxiv_version: 1405.4561v2 · doi: 10.48550/arxiv.1405.4561 · pith_short_12: ED6XMO4FUBNX · pith_short_16: ED6XMO4FUBNX25LB · pith_short_8: ED6XMO4F

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/ED6XMO4FUBNX25LBREQ6ZJFYMI \
  | 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: 20fd763b85a05b7d75618921eca4b8620299f68346b9f5bf6ac35d5922ea7882

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d02ca69e66f6347b0cbe669a08661e566efd280c65bb598d86e6c3d6ab15a1b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-05-18T22:03:38Z",
    "title_canon_sha256": "75093c8b59092f1fbe3e65cce4bac70f8ddcf7b61b802396a93eeec02d3d7c0a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.4561",
    "kind": "arxiv",
    "version": 2
  }
}