Pith Number

pith:CTDNF2NX

pith:2017:CTDNF2NXVWCM6KK7V2LRRVHKZ6

not attested not anchored not stored refs pending

Student Conceptual Difficulties in Hydrodynamics

Alvaro Suarez, Arturo C. Marti, Genaro Zavala, Sandra Kahan

arxiv:1709.02313 v2 · 2017-09-07 · physics.ed-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CTDNF2NXVWCM6KK7V2LRRVHKZ6}

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	2026-05-18T00:28:44.820184Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

14c6d2e9b7ad84cf295fae9718d4eacf8fe72ca972af91949f4cd852b7bdb865

Aliases

arxiv: 1709.02313 · arxiv_version: 1709.02313v2 · doi: 10.48550/arxiv.1709.02313 · pith_short_12: CTDNF2NXVWCM · pith_short_16: CTDNF2NXVWCM6KK7 · pith_short_8: CTDNF2NX

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/CTDNF2NXVWCM6KK7V2LRRVHKZ6 \
  | 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: 14c6d2e9b7ad84cf295fae9718d4eacf8fe72ca972af91949f4cd852b7bdb865

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30df0270b7c28838de9ca53fd45044e25690d05b600302f550933689276a22e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2017-09-07T15:31:33Z",
    "title_canon_sha256": "80ad51bf5ad7e662e9a7e7f6b8ccd73913a1747255d71c7b822bd916786829cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.02313",
    "kind": "arxiv",
    "version": 2
  }
}