Pith Number

pith:ZE7QY23I

pith:2011:ZE7QY23IAT6CXEOVHASURS5UMV

not attested not anchored not stored refs pending

Recovery of a source term or a speed with one measurement and applications

Gunther Uhlmann, Plamen Stefanov

arxiv:1103.1097 v1 · 2011-03-06 · 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{ZE7QY23IAT6CXEOVHASURS5UMV}

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	2026-05-18T04:27:17.148585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c93f0c6b6804fc2b91d5382548cbb4657e65ce2fd8d1f1dc4b9ae11c2f221ee4

Aliases

arxiv: 1103.1097 · arxiv_version: 1103.1097v1 · doi: 10.48550/arxiv.1103.1097 · pith_short_12: ZE7QY23IAT6C · pith_short_16: ZE7QY23IAT6CXEOV · pith_short_8: ZE7QY23I

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/ZE7QY23IAT6CXEOVHASURS5UMV \
  | 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: c93f0c6b6804fc2b91d5382548cbb4657e65ce2fd8d1f1dc4b9ae11c2f221ee4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad7810ebeaa9e4e6e08b40907bf53a4120cdf0276fe6a3dbdc6edda6042d1e8c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2011-03-06T03:24:39Z",
    "title_canon_sha256": "fbe760dfd7287604b1c594a0f8b2d741b90f531450472d65dfbe9fbfda068e1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.1097",
    "kind": "arxiv",
    "version": 1
  }
}