Pith Number

pith:CMQKBEH5

pith:2015:CMQKBEH5E74SOGT3CCFXN2IFC5

not attested not anchored not stored refs pending

The Calder\'on problem with partial data for conductivities with $3/2$ derivatives

Gunther Uhlmann, Katya Krupchyk

arxiv:1508.07102 v2 · 2015-08-28 · math.AP · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CMQKBEH5E74SOGT3CCFXN2IFC5}

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	2026-05-18T01:12:08.133167Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1320a090fd27f9271a7b108b76e90517603896d9959e9bec0021275776fff197

Aliases

arxiv: 1508.07102 · arxiv_version: 1508.07102v2 · doi: 10.48550/arxiv.1508.07102 · pith_short_12: CMQKBEH5E74S · pith_short_16: CMQKBEH5E74SOGT3 · pith_short_8: CMQKBEH5

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/CMQKBEH5E74SOGT3CCFXN2IFC5 \
  | 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: 1320a090fd27f9271a7b108b76e90517603896d9959e9bec0021275776fff197

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d42ff4362713a7d7859325afffa54e29676a6da97842bdbf2ae060113c0e3566",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2015-08-28T05:55:34Z",
    "title_canon_sha256": "588baad52566375eb8742a3c70b7762a67d97819fb28ad0d3e680edb2c9aa2b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.07102",
    "kind": "arxiv",
    "version": 2
  }
}