Pith Number

pith:EFVTZTK5

pith:2016:EFVTZTK5VDMVIHNKRKAJBHEWFJ

not attested not anchored not stored refs pending

Sum of squares length of real forms

Claus Scheiderer

arxiv:1603.05430 v1 · 2016-03-17 · 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{EFVTZTK5VDMVIHNKRKAJBHEWFJ}

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	2026-05-18T01:18:56.362494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

216b3ccd5da8d9541daa8a80909c962a5db22dea9d3091e33919c6bdb639780b

Aliases

arxiv: 1603.05430 · arxiv_version: 1603.05430v1 · doi: 10.48550/arxiv.1603.05430 · pith_short_12: EFVTZTK5VDMV · pith_short_16: EFVTZTK5VDMVIHNK · pith_short_8: EFVTZTK5

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/EFVTZTK5VDMVIHNKRKAJBHEWFJ \
  | 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: 216b3ccd5da8d9541daa8a80909c962a5db22dea9d3091e33919c6bdb639780b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6b1f7fc4444bf80060f62e46813c9e305b534c852b65ce4451b30589a5a3952",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-03-17T11:19:05Z",
    "title_canon_sha256": "4447918ff2e92a5c0724c10b6f9d97b1a4d5893f0905218d175fb7450564cc6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.05430",
    "kind": "arxiv",
    "version": 1
  }
}