Pith Number

pith:DIFLYYB6

pith:2020:DIFLYYB6TAXQEMH2FIJJ54MNVQ

not attested not anchored not stored refs pending

Non-uniqueness of steady-state weak solutions to the surface quasi-geostrophic equations

Dong Li, Hyunju Kwon, Xinyu Cheng

arxiv:2007.09591 v2 · 2020-07-19 · 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{DIFLYYB6TAXQEMH2FIJJ54MNVQ}

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	2026-07-05T03:35:58.793003Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a0abc603e982f0230fa2a129ef18dac0079fc1a0b587476f2729ba1128af43c

Aliases

arxiv: 2007.09591 · arxiv_version: 2007.09591v2 · doi: 10.48550/arxiv.2007.09591 · pith_short_12: DIFLYYB6TAXQ · pith_short_16: DIFLYYB6TAXQEMH2 · pith_short_8: DIFLYYB6

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/DIFLYYB6TAXQEMH2FIJJ54MNVQ \
  | 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: 1a0abc603e982f0230fa2a129ef18dac0079fc1a0b587476f2729ba1128af43c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bffab7a6e4c902be0a4521b166e354459eafb0e167553d9766018337473ca12f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2020-07-19T04:59:01Z",
    "title_canon_sha256": "6f0ca29993926f9cbc4b4b7ccb9ce820e4fd09a95accd676289aa33d28398e00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.09591",
    "kind": "arxiv",
    "version": 2
  }
}