Pith Number

pith:SPAARZHL

pith:2025:SPAARZHLVM33WJ5NVMAQU5BDB3

not attested not anchored not stored refs pending

Revisiting Koehler's experiment of measuring the ratio of the specific heats of air by self-sustained oscillations

Xiaoting Fen, Yujun Shi

arxiv:2511.10012 v2 · 2025-11-13 · physics.class-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{SPAARZHLVM33WJ5NVMAQU5BDB3}

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	2026-05-25T02:01:09.354637Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93c008e4ebab37bb27adab010a74230efb7a3e88c39e8419856a814e40d46ecd

Aliases

arxiv: 2511.10012 · arxiv_version: 2511.10012v2 · doi: 10.48550/arxiv.2511.10012 · pith_short_12: SPAARZHLVM33 · pith_short_16: SPAARZHLVM33WJ5N · pith_short_8: SPAARZHL

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/SPAARZHLVM33WJ5NVMAQU5BDB3 \
  | 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: 93c008e4ebab37bb27adab010a74230efb7a3e88c39e8419856a814e40d46ecd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c8a17da5305741c981df63b170abbea038fe5dabd221fbc06e1232f75edc60e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2025-11-13T06:29:16Z",
    "title_canon_sha256": "fde195aa2a92302b73400f888c3f1eccb5b2a98455deea7808e25a50f0f1019e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2511.10012",
    "kind": "arxiv",
    "version": 2
  }
}