Pith Number

pith:OZ2IJHJV

pith:2018:OZ2IJHJVRNTR7BTZP5VLTL6PDY

not attested not anchored not stored refs pending

Dificuldades na aprendizagem de F\'isica sob a \'otica dos resultados do Enem / Physics learning difficulties from the perspective of ENEM results

(2) UFRJ / PEMAT, (3) UFSC), Gustavo Rubini (2), Marta F. Barroso (1), Tatiana da Silva (3) ((1) UFRJ / IF

arxiv:1802.09880 v1 · 2018-02-27 · 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{OZ2IJHJVRNTR7BTZP5VLTL6PDY}

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	2026-05-18T00:22:21.968959Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7674849d358b671f86797f6ab9afcf1e3d216d7a036ac1a5dcea69fe35027acb

Aliases

arxiv: 1802.09880 · arxiv_version: 1802.09880v1 · doi: 10.48550/arxiv.1802.09880 · pith_short_12: OZ2IJHJVRNTR · pith_short_16: OZ2IJHJVRNTR7BTZ · pith_short_8: OZ2IJHJV

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/OZ2IJHJVRNTR7BTZP5VLTL6PDY \
  | 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: 7674849d358b671f86797f6ab9afcf1e3d216d7a036ac1a5dcea69fe35027acb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e46892b9d0e74cc52fd60882aafbac75695f1fa56b8cf3ffe5bc7c1bb0de4570",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2018-02-27T13:45:42Z",
    "title_canon_sha256": "4ac5a88d8f9a0541c336016a6f8b43d642529abb67d99da94e005f3b019ee919"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.09880",
    "kind": "arxiv",
    "version": 1
  }
}