Pith Number

pith:ICNKA7LK

pith:2026:ICNKA7LKEZIQFXZEXORLFYOLCV

not attested not anchored not stored refs pending

The Calder\'on problem for near-Euclidean metrics

Gunther Uhlmann, Yiran Wang

arxiv:2606.26540 v1 · 2026-06-25 · 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{ICNKA7LKEZIQFXZEXORLFYOLCV}

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	2026-06-26T01:15:34.035863Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

409aa07d6a265102df24bba2b2e1cb155507a018fbe559f45cde398c7ce8e59e

Aliases

arxiv: 2606.26540 · arxiv_version: 2606.26540v1 · doi: 10.48550/arxiv.2606.26540 · pith_short_12: ICNKA7LKEZIQ · pith_short_16: ICNKA7LKEZIQFXZE · pith_short_8: ICNKA7LK

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/ICNKA7LKEZIQFXZEXORLFYOLCV \
  | 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: 409aa07d6a265102df24bba2b2e1cb155507a018fbe559f45cde398c7ce8e59e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "267d63bdad01992de41e2973a1324a401db6c290607dbbabf1ca134f1ad13760",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2026-06-25T02:27:17Z",
    "title_canon_sha256": "781fc33ae6664bf02a83a8312e1b89fbe37da2fc219bfb936bd8eee90f14e101"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.26540",
    "kind": "arxiv",
    "version": 1
  }
}