Pith Number

pith:EFUQE2KV

pith:2014:EFUQE2KVMJJYDW44BNS6QPWYFO

not attested not anchored not stored refs pending

The twistor discriminant locus of the Fermat cubic

John Armstrong

arxiv:1404.0504 v1 · 2014-04-02 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EFUQE2KVMJJYDW44BNS6QPWYFO}

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	2026-05-18T02:55:03.211478Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2169026955625381db9c0b65e83ed82b8c3cc1c2cd77272c09fddc910fb1a0f1

Aliases

arxiv: 1404.0504 · arxiv_version: 1404.0504v1 · doi: 10.48550/arxiv.1404.0504 · pith_short_12: EFUQE2KVMJJY · pith_short_16: EFUQE2KVMJJYDW44 · pith_short_8: EFUQE2KV

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/EFUQE2KVMJJYDW44BNS6QPWYFO \
  | 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: 2169026955625381db9c0b65e83ed82b8c3cc1c2cd77272c09fddc910fb1a0f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7651aef8fe114d1be3988fdd16ad0fc7123d1b847cada0a884a25a7077cee711",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2014-04-02T10:01:54Z",
    "title_canon_sha256": "4eb985128a802ed486d0e93efc555ffa8601d3d9f9a2d2a6576d62a760b20c33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.0504",
    "kind": "arxiv",
    "version": 1
  }
}