Pith Number

pith:JC4KSNIH

pith:2021:JC4KSNIHKXVHQLVRY6OHA437ZR

not attested not anchored not stored refs pending

Local Well-posedness and Incompressible Limit of the Free-Boundary Problem in Compressible Elastodynamics

Junyan Zhang

arxiv:2102.07979 v4 · 2021-02-16 · 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{JC4KSNIHKXVHQLVRY6OHA437ZR}

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	2026-07-05T04:36:18.719613Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

48b8a9350755ea782eb1c79c70737fcc5c10e478423eb0cd41db2b3909521876

Aliases

arxiv: 2102.07979 · arxiv_version: 2102.07979v4 · doi: 10.48550/arxiv.2102.07979 · pith_short_12: JC4KSNIHKXVH · pith_short_16: JC4KSNIHKXVHQLVR · pith_short_8: JC4KSNIH

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/JC4KSNIHKXVHQLVRY6OHA437ZR \
  | 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: 48b8a9350755ea782eb1c79c70737fcc5c10e478423eb0cd41db2b3909521876

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11ad0342891dd18126a5499cd0e496a46dd2f5bc14ae620306d37b857a73b822",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2021-02-16T07:02:10Z",
    "title_canon_sha256": "a4031add00cde45b8fcba6f12fccabb82fe528545cc0584a1e4481cbbc35b12f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.07979",
    "kind": "arxiv",
    "version": 4
  }
}