Pith Number

pith:HH6QSUZG

pith:2011:HH6QSUZGDSCYOU7LLRHAUBCN7H

not attested not anchored not stored refs pending

Increasing stability in an inverse problem for the acoustic equation

Gunther Uhlmann, Jenn-Nan Wang, Sei Nagayasu

arxiv:1110.5145 v1 · 2011-10-24 · 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{HH6QSUZGDSCYOU7LLRHAUBCN7H}

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	2026-05-18T04:10:24.601696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39fd0953261c858753eb5c4e0a044df9de96c6605200317aa7ab9f6747bae3a9

Aliases

arxiv: 1110.5145 · arxiv_version: 1110.5145v1 · doi: 10.48550/arxiv.1110.5145 · pith_short_12: HH6QSUZGDSCY · pith_short_16: HH6QSUZGDSCYOU7L · pith_short_8: HH6QSUZG

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/HH6QSUZGDSCYOU7LLRHAUBCN7H \
  | 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: 39fd0953261c858753eb5c4e0a044df9de96c6605200317aa7ab9f6747bae3a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f8fff291c6c6e6022289d7ee199679d4e24c324a4343cf1fbad3ecdcb240630",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2011-10-24T07:29:48Z",
    "title_canon_sha256": "3ef7b7bbed91d3050683a849fdb0f647bcb7a532749a800c2df6e703a2a9642c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.5145",
    "kind": "arxiv",
    "version": 1
  }
}