Pith Number

pith:6X4SX75B

pith:2009:6X4SX75BXJ6IRVU6Q4LH7CLTXO

not attested not anchored not stored refs pending

A Fourier transform method for spread option pricing

T. R. Hurd, Zhuowei Zhou

arxiv:0902.3643 v1 · 2009-02-20 · q-fin.CP · q-fin.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6X4SX75BXJ6IRVU6Q4LH7CLTXO}

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	2026-07-04T15:38:27.085818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5f92bffa1ba7c88d69e87167f8973bbae692e9a05f4e841289b589728a0c3db

Aliases

arxiv: 0902.3643 · arxiv_version: 0902.3643v1 · doi: 10.48550/arxiv.0902.3643 · pith_short_12: 6X4SX75BXJ6I · pith_short_16: 6X4SX75BXJ6IRVU6 · pith_short_8: 6X4SX75B

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/6X4SX75BXJ6IRVU6Q4LH7CLTXO \
  | 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: f5f92bffa1ba7c88d69e87167f8973bbae692e9a05f4e841289b589728a0c3db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff21b47ae89848738efd9cf98b059cebf22f9195d70a369747e045be9a268428",
    "cross_cats_sorted": [
      "q-fin.PR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-fin.CP",
    "submitted_at": "2009-02-20T20:47:51Z",
    "title_canon_sha256": "3a5266af73b9a4f89331ca29b86a732d5b05cac8a16901c286a7d0856f7b18e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.3643",
    "kind": "arxiv",
    "version": 1
  }
}