Pith Number

pith:SOGP5T2W

pith:2019:SOGP5T2WXNK56B5OTBMSRI4YOH

not attested not anchored not stored refs pending

Boundary determination for hybrid imaging from a single measurement

Tommi Brander, Torbj{\o}rn Ringholm

arxiv:1904.00644 v1 · 2019-04-01 · math.NA · 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{SOGP5T2WXNK56B5OTBMSRI4YOH}

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	2026-05-17T23:49:47.820659Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

938cfecf56bb55df07ae985928a39871f007f04421666914fafe5be05d233e37

Aliases

arxiv: 1904.00644 · arxiv_version: 1904.00644v1 · doi: 10.48550/arxiv.1904.00644 · pith_short_12: SOGP5T2WXNK5 · pith_short_16: SOGP5T2WXNK56B5O · pith_short_8: SOGP5T2W

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/SOGP5T2WXNK56B5OTBMSRI4YOH \
  | 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: 938cfecf56bb55df07ae985928a39871f007f04421666914fafe5be05d233e37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9f440ade97ce636afea138006c3855532f0723392de8ce8a2c15dd1076c364b",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-04-01T09:03:22Z",
    "title_canon_sha256": "e47840b1c5bc441e628825b23ebdc4a38739c944c8a88b34a8dd99a7976b8375"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.00644",
    "kind": "arxiv",
    "version": 1
  }
}