Pith Number

pith:6A7X4KH2

pith:2001:6A7X4KH27446XXL73EGC4X6Q4B

not attested not anchored not stored refs pending

Recovery of small electromagnetic inhomogeneities from boundary measurements on part of the boundary

A.G. Ramm, H. Ammari

arxiv:math-ph/0111015 v1 · 2001-11-08 · math-ph · cs.NA · math.MP · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6A7X4KH27446XXL73EGC4X6Q4B}

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	2026-06-03T22:06:14.338712Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f03f7e28faff39ebdd7fd90c2e5fd0e0666ee409c9b9a353d3dae43cfa5e0b4c

Aliases

arxiv: math-ph/0111015 · arxiv_version: math-ph/0111015v1 · doi: 10.48550/arxiv.math-ph/0111015 · pith_short_12: 6A7X4KH27446 · pith_short_16: 6A7X4KH27446XXL7 · pith_short_8: 6A7X4KH2

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/6A7X4KH27446XXL73EGC4X6Q4B \
  | 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: f03f7e28faff39ebdd7fd90c2e5fd0e0666ee409c9b9a353d3dae43cfa5e0b4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c7cb4f15e932a5e5f9932ce18d4c79a3347cd6f2069435e50beefdd44d38722",
    "cross_cats_sorted": [
      "cs.NA",
      "math.MP",
      "math.NA"
    ],
    "license": "",
    "primary_cat": "math-ph",
    "submitted_at": "2001-11-08T21:03:35Z",
    "title_canon_sha256": "3931e91535586d3e2930b434e32ed4df7d3880989247c2430932bbc012d0ab62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math-ph/0111015",
    "kind": "arxiv",
    "version": 1
  }
}