Pith Number

pith:E3TXEUKX

pith:2005:E3TXEUKXEUERO7FP3AB6QNZNRQ

not attested not anchored not stored refs pending

Null structure and almost optimal local well-posedness of the Dirac-Klein-Gordon system

Damiano Foschi, Piero D'Ancona, Sigmund Selberg

arxiv:math/0509545 v1 · 2005-09-23 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E3TXEUKXEUERO7FP3AB6QNZNRQ}

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	2026-05-18T01:05:23.107756Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26e77251572509177cafd803e8372d8c24bd06fe36c3a66c6b113c17b4e2999c

Aliases

arxiv: math/0509545 · arxiv_version: math/0509545v1 · doi: 10.48550/arxiv.math/0509545 · pith_short_12: E3TXEUKXEUER · pith_short_16: E3TXEUKXEUERO7FP · pith_short_8: E3TXEUKX

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/E3TXEUKXEUERO7FP3AB6QNZNRQ \
  | 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: 26e77251572509177cafd803e8372d8c24bd06fe36c3a66c6b113c17b4e2999c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d67352788c5c1399f7be83908a156defc48ae511047e447a15f49d98883a752",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.AP",
    "submitted_at": "2005-09-23T10:12:54Z",
    "title_canon_sha256": "30f6ee8c221a7dc473898de186402818b31b03ef387dedcfbb989bcabf55dc84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0509545",
    "kind": "arxiv",
    "version": 1
  }
}