Pith Number

pith:VIS3UYEC

pith:2009:VIS3UYECK3AFPYOJV3PTZ5HCQD

not attested not anchored not stored refs pending

Darboux transformation for a general Dirac equation in two dimensions

Axel Schulze-Halberg, Ekaterina Pozdeeva

arxiv:0904.0992 v6 · 2009-04-06 · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VIS3UYECK3AFPYOJV3PTZ5HCQD}

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	2026-05-18T04:25:02.035923Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa25ba608256c057e1c9aedf3cf4e280e3c3491b3873de1f9e5ba847b144b40a

Aliases

arxiv: 0904.0992 · arxiv_version: 0904.0992v6 · doi: 10.48550/arxiv.0904.0992 · pith_short_12: VIS3UYECK3AF · pith_short_16: VIS3UYECK3AFPYOJ · pith_short_8: VIS3UYEC

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/VIS3UYECK3AFPYOJV3PTZ5HCQD \
  | 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: aa25ba608256c057e1c9aedf3cf4e280e3c3491b3873de1f9e5ba847b144b40a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b240175fa6650f71636fa5a3b392e2d71b394eeef23b6155537eb21413def63",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-04-06T19:31:40Z",
    "title_canon_sha256": "9f8d1583118ca012e29a65c42cd8a016f4a09555ddfb909da12e52e79d815901"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0992",
    "kind": "arxiv",
    "version": 6
  }
}